Orny's Cycling Journal

But Why?!?

2026-01-20T16:49:46Z

In my previous post celebrating 100,000 miles on the bike, I promised an upcoming post about the motivations that underlie my passion for cycling. Here it is, with a shorter bonus postscript listing some things I actually dislike about cycling.

I started pedaling when I was around five years old, when my parents first plunked my ass down on a Marx Big Wheel plastic tricycle and turned me loose in our driveway. I’ve been pedaling ever since, with the only break happening during college (when I got my first car) through my first full-time job (and my first new car).

That tallies up to about 45 years where cycling has been a central part of my life.

It might seem a little late to think about this, but I’ve decided to take a look at why. What is it that motivates me to keep pedaling, after having already ridden for such a ridiculously long time?

The impetus for looking into that question came from a recent GCN video, wherein one of the presenters asked himself why he never got tired of cycling. It might be worth a watch if the question is meaningful to you. A few of the answers he shared resonated with me, and some of them absolutely did not, but the question remained…

What is it about riding a bike that still appeals to me?

But two items of business need to be mentioned before I can share my own answers.

First, after I’ve shared my motivations, I’ll share the much shorter list of things I hate about cycling, which might actually be more interesting to some.

And second: writing about my motivations is tricky. The list of factors is long and detailed, and it would be difficult to convey my depth of feeling without getting really verbose and boring my audience to death. So I’m going to keep my comments brief, and ask the reader to infer that depth of feeling. So keep that in mind while you read my summary descriptions.

That said, here’s my list. There’s a dozen of them, in single-sentence bullet-list form:

Cycling – especially the sensation of speed – is exciting and fun, and that’s just as true at age 60 as it was at age 6.
Cycling allows me to enjoy the outdoors, connecting with nature, breathing fresh air, and feeling the sunshine and wind.
It gets me out into the world around me, seeing the countryside and the varying contours of the land, while learning all kinds of details about the places I ride through.
I’ve always needed a physical outlet for expending excess energy, and cycling provides a healthy way to work myself to fatigue or exhaustion.
The health benefits of cycling are greater than almost any other human activity, contributing directly to cardiac, respiratory, circulatory, muscular, and digestive health (without even mentioning mental and emotional health).
Cycling can burn a tremendous amount of calories, which makes it great for dieting, or (as in my case) a good way to get away with eating lots and poorly.
I get to exercise my analytical side by tracking and comparing all the quantitive data that’s produced, such as my mileage, power, and fitness numbers.
With such clear ways to quantify performance, cycling makes it easy to set goals for myself, and a genuine sense of achievement upon reaching my goals.
Group rides offer a social element that is lacking in many of my other daily activities, and I’ve made a number of good friends as a result of this pastime.
Many rides wind up as treasured memories that I look back upon and will enjoy for a lifetime.
As everyone knows, one of the most rewarding things I’ve ever done is raising money to support cancer research at the Dana-Farber Cancer Institute, through my 26-year devotion to the Pan-Mass Challenge charity ride.
For all these reasons, cycling is clearly a great use of my time; among the many options I have for spending time, cycling beats nearly all other alternatives.

As far as I’m concerned, that’s an extremely compelling list of reasons to get out and ride, even – or perhaps especially – now that I’m into my sixties.

In contrast, there are certain aspects of cycling that I avoid like the plague. So, as promised, here is my much shorter list of the things that I hate about cycling.

Number one is that I only ride on the road. There are lots of other cycling disciplines, including mountain biking, gravel riding, cyclocross, track riding, bikepacking, downhill, stunt riding, and more. I don’t do those. I am a roadie, and exclusively a roadie.

I don’t race. In the U.S., most bike races are criteriums, taking place on small, technical courses with lots of turns. That kind of close-quarters racing is insanely dangerous, and I’m just not interested in courting crashes and injuries. And while I might enjoy other formats like hill climbs or time trials, I really have no desire to compete against other cyclists. I much prefer challenging myself with completing a long and/or difficult course like a century or a brevet.

I don’t do interval workouts or structured training programs. Although high intensity work is a vital part of any training regimen, I detest the self-induced extreme suffering of riding according to a spreadsheet and a stopwatch. What works best for me is the Swedish idea of “Fartlek” – or “speed-play” – where you emphasize varying your intensity based on the terrain around you, with some degree of both spontaneity and specificity.

I don’t ride a bike with motorized assist. While there might come a day when old age and feebleness force me to accept powered assistance from an e-bike, I will avoid that as long as I possibly can. Since exercise intensity is also an important part of healthy aging, I’m not going to surrender any of my fitness until I’m forced to.

And finally… I don’t mind big hills, darkness, or cold weather – I have appropriate gear for any of that stuff – but I do my best to avoid riding in wet weather. Even though it’s really only miserable at first (once you’re soaked thru, you can’t get any wetter), it wreaks havoc on the equipment and necessitates very thorough post-ride cleaning and maintenance: a messy, tedious chore I’d much rather avoid.

All this might leave you thinking that I‘m always ready and eager to ride, but that’s not always the case. In fact, there’s often times when cycling is the last thing I want to do. Usually that’s because I’m overtrained, when I’ve worked myself too hard for too long, without giving my body sufficient time to fully recover, leaving me tired and irritable. After all, it’s a fundamental cycling truth that you don’t get stronger while riding; that’s when you incur the damage that promotes muscle growth. That growth and strengthening can only happen while you’re resting, so it’s important for cyclists to rest just as diligently as they train.

That’s why I have time to contemplate and share why I’m still in love with cycling… Because I’m taking a much-needed rest day after riding for six days in a row! Now, if you’ll excuse me, I believe there’s a big ole burrito downstairs with my name on it…

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Special Operations

2025-03-10T19:09:28Z

Friday I had heart surgery. Even though it was via intravenous catheters and I should fully recover, the recuperation period is still gonna blow a hole in my training and fitness. So this is a good time to get you caught up on what I’ve been up for the past two months, and where things go from here.

So far, 2025 has been a little bit of up-and-down, and a little bit of in-and-out. I took a bit of a break when the calendar flipped, and then it was an odd mix of indoor and outdoor riding, mostly dictated by Austin’s variable winter temps.

Pacing the CEO on a PMC Zwift group ride

Video of Austin's Friday Truancy group ride rolling out

Brilliant Texas skies along Walnut Creek trail extension

On the indoor side, I’ve logged about 1,000 km on Zwift, focusing primarily on riding a dozen+ new routes, advancing another four XP levels, and participating in eight delightful PMC group rides, which have just finished up for the season.

But knowing that a surgically-induced enforced break was coming, I did my best to ride outdoors as much as the weather would allow. February in Austin began and ended delightfully, allowing me to rack up over 500 real-world kilometers on a dozen rides, including my first two Friday Truancy group rides since my stroke at the start of October.

My final ride before the operation was last Wednesday’s 80 km trip out the Southern Walnut Creek path to Manor, which was my longest ride – indoor or out – since my stroke. It also marked my max Fitness level for the year (a pretty moderate 56 CTL), having finally recovered all the Fitness I’d lost by resting at the start of January.

So that brings us to the beginning of March, and Friday’s heart surgery. If you want all the details, you can read the accompanying post in my general blog, but here I’ll limit myself to the short- and long-term impacts to my riding.

In the short-term, the surgery is going to require some recuperation time, which means time off the bike. It’s really important that the two incisions into major veins in the hips are allowed to close up and fully heal before attempting any kind of exercise. If things go well, this week I’ll start doing some short walks. A week after that I might introduce some low-intensity work on my partner’s elliptical trainer. Then some easy rides on my indoor trainer. But for the next month I have to always keep my heart rate below an extremely mild 100-110 bpm.

I’ll have some post-op testing and a followup with my cardiologist in about three weeks, at which point I hope to get the green light for a gradual return to actual training. Over the next several weeks of minimal exercise, my Fitness is going to plummet, and April and May will be spent trying to get back to last week’s Fitness level.

And what will the rest of the year look like? It’s hard to say until after that followup appointment. I think I can expect a full return to endurance riding, but when and how long that’ll take is unknown. I’m almost certainly not doing the events I’d hoped to do in April: the American Stroke Association’s CycleNation charity spin-bike ride; and the Red Poppy Ride century. But I might be ready for June’s 100k Fire Ant Tour. We’ll see how it goes.

And what about riding remotely for August’s Pan-Mass Challenge? As I said in December’s annual summary post, that’ll remain a complete unknown until May, so I’ll defer my registration until I have more clarity. Hopefully I’ll be in shape to make it a good couple days of riding, to “properly earn” my sponsors’ donations to DFCI, even if perhaps it might fall short of the traditional 300 kilometers.

But I do expect I’ll be able to return to the endurance riding that I love. It’s just a question of when, and how long it’ll take to train back up to the fitness I need to complete such rides.

But until then I guess I’ll take a few weeks of enforced relaxation!

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Rolling into 2025

2025-01-08T02:13:12Z

This one’s just a minor but significant (to me) blog update. It’s not really even worth bringing others’ attention to it, except that I’m pleased with how I was able to make it work. So what is it?

Yawl know that there’s a sticky/pinned post pinned to the top of my blog with charts that track my Fitness as of my most recent ride.

And one of those charts has always shown my Fitness for the current calendar year.

The problem was: when the year is new (like it is now), that chart would be mostly empty, and it would take weeks or months for it to show any kind of meaningful data.

The obvious solution was to stop segmenting the chart by calendar year, and instead have it show my Fitness over a rolling 12-month period, kinda (exactly) like what you see below. That way it always shows a full year’s worth of data, with new data being added every day, and old data points rolling off.

Setting this up to happen automatically – without any user intervention – required a little tech wizardry to implement, but it’s now done and live on that pinned Up-To-Date Fitness Charts posting. I think it’s a nice little enhancement, and just wanted to call it out so that folks can take note of it.

Here’s what it looks like:

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The Aging Cyclist

2023-11-04T15:16:39Z

I was 35 years old when I started my adult cycling career. In those early years, my rapidly-growing cycling fitness more than compensated for any loss of overall fitness that came as I aged.

As the years passed, my cycling fitness reached a stable plateau, while the effects of aging slowly but consistently gained momentum. But I wasn’t worried; throughout my forties I could easily keep up with riders ten years younger.

But when I turned 50, I noticed it took increasingly more effort to keep up with the kids. And now that I’m 60 years old, I have to admit that I’m simply not keeping up with them anymore, and never will again, no matter how hard I train.

So in case you’re on that same career path, here’s a few observations about my experience as an aging cyclist.

It’s easiest to see in the numbers. It wasn’t as linear as the “220 minus age” formula implies, but my max heart rate has dropped significantly over the past 15 years, from 175+ down to 160. And the inevitable loss of muscle mass has been reflected in my FTP and other measurements of power output like sprinting duration and max power.

The media always invokes the idea that we need more recovery time after hard efforts as we age. For me, that manifests mostly in my ability to do repeated bursts of high-intensity effort within a ride. I don’t feel I need more recovery time between rides; if I need more time for anything after a hard ride, it’s for my motivation to recover! And of course the standard prescription for maintaining fitness as we age is to continue doing severely painful intensity workouts. Ugh!

One generalization I can confirm is that as I’ve aged, my sleep cycle has become shorter and less refreshing. Gotta start embracing the nap, although they’ve always left me feeling nauseous afterward.

Another change is that I’m less willing to tolerate bad weather. I’m good with heat, but I’m kind of done thinking that riding in the cold is any fun. Doubly so for rain, and the annoying cleanup routine that follows a wet ride. Yes, it can be done; no, I don’t think it’s worth it anymore.

But once you’re out on the road on a nice day, what does riding “over the hill” feel like? It feels like having one of those days where you’re not performing at your best… every single day! Whether it’s heavy legs or lack of aerobic fitness, it always feels as if there’s something limiting me. There aren’t many of those strong days when you’re at peak fitness and everything comes effortlessly.

Instead of looking forward to hills as a place to attack your group, you begin to fear them as places where you’ll fall behind the group. And they drop you more frequently on those climbs… and on the flats… and on descents. You still participate in group rides, but you wind up isolated and riding by yourself much of the time.

You get discouraged on group rides, because you’re the last person to each rest stop, which means you always get the least rest before the group sets out again, despite being the person who needs recovery the most. So you give up on the group and spend more time doing solo rides.

That’s what it’s like. I’ve had an undeniable drop-off in physiological performance due to aging. But at the same time, psychologically I’m just less willing to tolerate the suffering inherent in high-intensity, maximal efforts. To keep up with other riders, I have to spend more and more of my time riding at my limit, and it’s harder and harder to marshal the motivation to spend long hours riding at that limit.

While I was slowly getting older, I spent 25 amazing years near the front of the pack. Now that I’m 60 years old, that’s simply no longer a possibility. It’s time to set ego aside and get used to being one of the slower riders that other people have to wait for. It’s either that, or ride solo, which is something I’ve always done quite a lot of.

While I may not be the strongest cyclist in the pack any more, I still have the advantage of being significantly healthier than my sedentary age-group peers. And I still have as much passion for cycling as I’ve ever had. The bottom line is that I need to accept my reduced capabilities, adjust my goals to match them, find groups that will tolerate them, and just ride on.

May the road before you be a long, enjoyable one!

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Legend on the Ladera

2023-08-06T20:53:41Z

I’m an old man. I’m not gonna set any speed records (aka Strava KoMs) on the melty-sweltery streets of south-central Texas. Especially in a city full of amateur and pro racers like multiple and current Tour de France participant Lawson Craddock.

However, what I can do is ride frequently, and if you’re the person who has ridden a road segment more often than anyone else in the previous 90 days, Strava recognizes you with their “Local Legend” award (aka LCL).

Looking back from the top of Ladera Norte

So with few century-length rides happening in the unrelenting convection oven heat of summer in Texas, and needing some kind of cycling goal to motivate me, I decided to try to win the LCL on one of Austin’s most notorious hills: the kilometer-long, 100-meter, 16%-max climb up Ladera Norte, where the aforementioned Lawson Craddock holds the fastest ascent.

My first introduction to Ladera Norte (Spanish for ‘North Slope’) was during our apartment-hunting trip last Thanksgiving. We had just completed our second viewing of the house we would eventually lease, and took some time to drive around and explore the neighborhood. Just three kilometers from the house, we randomly turned at a sign for “North Cat Mountain” and up a slope that immediately reminded us of the ludicrous hills back in Pittsburgh, like maybe Hazelwood Ave. It was a huge eye-opener.

Becoming the Local Legend on it wasn’t gonna be an easy task. Not only is it a challenging climb, but the guy who held the title had ridden it over 30 times. I’d have to climb that beast more than once every three days, for three months straight! During… wait for it… June, July, and August.

So I added the climb to the start of my short one-hour recovery ride loop and started doing it as often as I could tolerate. By riding first thing in the morning, I could avoid Austin’s daily 40° C heat, although it gets unpleasantly humid overnight. Doing this route so often really limited my other riding, but I wasn’t planning on many long rides in that heat anyways. Riding straight out to the climb, over the top, then cooling down with my recovery loop became my not-quite-daily ritual.

Because I was riding the same route so often, I became the LCL on a number of other segments along my route: No Hills Drive, Mesa, Greystone, Bull Creek, Hancock. And, eventually… Ladera Norte!

After much repetitive climbing, I finally stole the LCL on July 30th. Having done 30 climbs over 65 days, I’d completed nearly one ascent every other day for 9½ weeks. Mission accomplished, at least temporarily.

See, when you take the LCL from someone, Strava sends them an email letting them know. So the next question was whether the former LCL was in the mood to go out and immediately take it back from me.

It’s been a week since I took the title, and he hasn’t made any attempt to catch up. Meanwhile, I’ve done a few more reps, and our current tallies are 33 to 27. So it looks my status as the Local Legend on Ladera Norte is somewhat secure.

Which means it’s time for me to switch goals, and that’s something I need to do anyways.

Five weeks from today I will be doing my first Livestrong Challenge, which is also my first attempt at a 100-mile ride in Texas, and my first century on the new bike: Pæthos. If I keep doing these dinky 26km morning rides, there’s no way I’ll be prepared to tackle 100 miles, so now I’m changing my focus to: getting lots more kilometers under my belt, and getting better acclimated to the extreme heat of high noon in Texas. Wish me luck!

And of course if you can, it would be wonderful if you expressed your support via a donation to the Livestrong Foundation, which supports cancer survivors. You can do that on my LC rider page: https://give.livestrong.org/ornoth

Thanks for being with me!

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Up-To-Date Fitness Charts

2022-05-16T17:09:40Z

Welcome to my cycling blog!

NOTE: This is a perpetual/sticky/pinned post. It’s not my most recent posting; if you’re looking for that, just scroll down or click here.

I pinned this post to the top of my cycling blog because the following charts are automatically updated after every bike ride (both outdoors and on the indoor trainer). So you can easily find this entry, which always shows my up-to-date Fitness numbers.

By “Fitness”, I’m specifically referring to my Chronic Training Load (or CTL), which is an exponentially weighted moving average of my Training Stress (TSS) over the preceding six weeks. You can learn more in this video, this web page, or this book.

So without further ado, here are my up-to-the-minute Fitness charts.

The first chart depicts my Fitness level over the past 12 months. Any red dots that appear represent rides of 100 miles or more. For comparison purposes, I’ve included a light grey line to show my normal/average Fitness over the course of a year.

Calendar-year charts: 2026 2025 2024 2023 2022 2021
2020 2019 2018 2017 2016 2015 2014 2013 2012 2011

The second chart shows my long-term Fitness level since 2011, when I first started tracking my CTL. As expected, it peaks during the summer cycling season, and declines during the wintertime off-season, although less so since 2018, when I bought my indoor trainer. Note: no dots for centuries, cos there’d be more than 90 of ’em.

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Pedal to the Medal

2022-04-08T20:56:07Z

Measuring power is the gold standard of performance management on the bike. I’ve waited years for the industry to provide a pedal-based power meter that is accurate, uses mountain bike-style SPD cleats, is reasonably easy to use, and “affordable”.

In 2018 I bought a Wahoo Kickr Core indoor trainer, which allowed me to finally measure my power output over the winter. But when I took the bike off the trainer for the summer, I had to give up measuring power, and go back to estimating power (and thus fitness and fatigue) indirectly based on heart rate data.

However, after over a decade of waiting, last month I opened my wallet and acquired a set of Garmin Rally XC200 power meter pedals. Here’s some background and insight into how it’s been for me so far…

Why pedal-based? These days, you can throw a power meter on a bike in several places: pedals, crankarms, chainring spider, rear hub… A pedal-based system made sense for me because it’s the easiest to install, and the easiest to move from one bike to another. And unlike a hub or indoor trainer, it measures your power output earlier in the process, because some power is lost to friction and inefficiency in the drive train (as we’ll see in detail below).

Why the Garmin ones? One other option, the SRM X-Power, was about the same price, but they have a bad rep with pedals, and just didn’t seem able to manufacture them very quickly.

The only other option would be to buy a pair of non-SPD Favero Assioma pedals, rip out the internals, and plug that into a pair of Favero SPD pedal bodies. That would have been a couple hundred bucks cheaper, but would have voided their warranty, which is meaningful on a nearly $1,000 purchase.

Another argument in favor of the Garmins is that they have 2 to 4 times better battery life than the others.

A lot of this gets covered in exhaustive detail by the incomparable DC Rainmaker in his exhaustive Garmin Rally review from last year, as well as this year’s power meter pedal buyer’s guide.

Some miscellaneous notes: All these pedal-based units are double-sided (a necessary convenience), and also transmit your cadence to your bike computer, eliminating the need for a separate cadence monitor.

Like the Assiomas, the Garmin power meter is housed in the pedal spindle, and can be moved between pedal bodies of different styles. So if I ever decided to switch from SPD pedals to SPD-SL or Look Keo style cleats, I could just buy some empty pedal bodies and plug the power meter spindle right in.

Also, although the Garmins were very expensive, I got a tasty $240 discount thanks to REI’s spring members’ sale. Plus forthcoming reward bucks that could be applied to a new Garmin bike computer, if they were to ever release a new model…

Some usage notes: You need to keep a couple things in mind in addition to your battery life. One is that you need to let the unit acclimate to the outdoor temperature in order to get accurate readings, and that can take about ten minutes if you store and ride your bike in very different temperatures. And then you also need to do a zero-offset calibration about 10 or 15 minutes into every ride. It’s a bit of a bother, but it’s much better than we used to do with older power meters.

One big difference is the weight of the pedals. These pedals weigh 443g; they are replacing my current pedals, which weigh in at 306g. Although I’ll also be removing my dedicated cadence sensor from the bike, which is an additional 10g.

So what data do I get? I’ve already mentioned power (in Watts) and cadence, but there’s a shitton more. You get the power balance between your left and right legs. You get how much time you rode seated versus standing. You get measurements of how much power you produce at all points throughout the pedaling circle (even if that’s not of any practical value to anyone). You get measurements of whether your power is being delivered at the center of the pedal, or off to one side, which might indicate a bit of a fitting problem. And all of these are logged second-by-second for later analysis.

Can this get any geekier? I’m glad you asked!

So one of the biggest questions to ask of any power meter is its accuracy. The first units claimed to be accurate to ±5%, and up til now I’ve been assuming my Kickr is performing up to its ±2% claim. Most power meters these days (including my pedals) advertise ±1% accuracy, but how do I know? Well, let’s compare them against one another!

I’m going to look at two indoor trainer rides. The first is a March 31th 50-minute ride of Zwift’s Tour of Watopia Stage 3 on the hilly Downtown Titans route. The second, longer ride is ToW Stage 2’s flatter Watopia’s Waistband route on April 2th.

For each ride, I simultaneously recorded the power data coming from my Wahoo Kickr Core, and also that coming from my Garmin Rally XC200 pedals. So if things are working correctly, the measurements coming from each ride should be almost identical.

First, the numbers: As expected, cadence was virtually identical between the pedals and the crank-mounted dedicated cadence sensor (I did not take cadence from the Kickr, as trainers aren’t reliable for cadence data).

In contrast, the pedals registered an average power that was 2.7 to 4.1% higher than the trainer. Similarly, average weighted power came in 3.0 to 4.5% higher. Does that mean one power meter is slightly off, and how do we know which one?

No, everything’s fine. That small difference is eminently explainable by that thing I mentioned way back in paragraph four: power numbers coming from a trainer will be lower due to drive train losses that occur due to friction and flexion somewhere between the pedals, crankarms, chainrings, chain, cogset, and trainer. So they’ll naturally report a little lower numbers than pedals, which measure power transfer much earlier in the process. That would easily explain the 2.7 to 4.5% variation I saw.

But interestingly, when you look at maximum power (e.g. sprinting), the difference between the pedals and trainer falls to 0.6 to 1.0%. I haven’t got a good explanation for that yet.

But that’s all just summary data, and averages aren’t a great way to validate data over time. Much more revealing (and interesting) is the second-by-second detailed data. For that, we need some charts!

Next, the charts: So let’s compare the power data for each ride in the DC Rainmaker Analyzer Tool, overlaying the numbers for each ride from our two data sources to see how closely they match up. In all these charts, the red line is my Kickr Core trainer’s data, and the Garmin pedals are in green, and hopefully those lines will be almost identical.

First, let’s look at the power charts for the whole duration of both rides.

It’s a little easier to see on the first chart, since it’s less busy, but in general the numbers reported by my pedals and my trainer line up really well, with the pedals giving slightly higher numbers, as expected.

Remember tho that the first chart is 50 minutes long, and the second is 90 minutes. So although things look pretty good (yay!), this is at an extremely coarse level. For a better comparison, we really need to zoom in a little closer. Let’s find a couple representative chunks in the 7- to 10-minute range.

And there you go. Aside from the pedals’ slightly higher readings, the ups and downs of the charts are almost identical, close enough that the difference could easily be put down by the devices’ different sampling rates. No dropouts, no crazy spikes, or big differences between the curves.

In addition to a simple time-series comparison, there’s another way athletes look at power that might confirm our conclusion. For a sprinter, your overall power doesn’t matter so much as the maximum power you can put out and sustain over five, ten, maybe thirty seconds. So the critical power curve shows the maximum power you sustained over a particular duration. Obviously, the human body can generate a lot of power in short bursts, but can only sustain a more moderate power over durations measured in minutes and hours.

Unfortunately, as I’ve noted before, I’m keeping an eye on some cardiac issues and my chainrings are so worn that I can’t really sprint without dropping my chain, so my numbers are very pedestrian. Still, we can still draw some conclusions from my critical power curves for those two rides.

And this perfectly confirms everything we’ve seen so far. At just about every duration, the pedals consistently read 3 to 5% higher than the trainer, as expected. The only variance is at durations shorter than 15 seconds, where the devices’ sampling rates might impact the numbers.

So my overall conclusion is that I can definitely rely on these pedals to produce accurate power data that is very consistent with my indoor trainer, keeping drive train losses in mind.

Unless you’re a cyclist, it’s hard to convey how exciting and interesting it is to finally have a power meter on the bike year-round. At the big-picture level, this means my power data will finally be consistent between indoor and outdoor seasons, thus giving me more reliable fitness and fatigue numbers.

This means I can not only monitor my fitness and fatigue month-by-month and year-over-year, but also precisely quantify and properly pace my level of effort and reserves on a minute-by-minute basis during an individual ride of whatever duration.

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