If you’re looking for a short indoor cycling session that packs a serious training punch, 10-Minute Variable Power Cycle is hard to beat. This workout constantly changes intensity and duration, challenging your body to adapt to the unpredictable demands often experienced during road races, draft-legal triathlons and fast group rides.
Although the total riding time is only 30 minutes, this session delivers a wide range of training stimuli, making it ideal when you’re short on time but still want a high-quality workout.
Each Sunday, I’ll post a Sunday Smart-Trainer Session that you can complete to improve your cycling fitness. See my previous article explaining the different Training Intensity Levels to understand how hard each effort should feel. If you’re training directly with me, I’ll generally prescribe these sessions using either Power Zones or Heart Rate Zones to match your individual training programme.
This workout was inspired by a cycling protocol used by researchers investigating optimal training methods for draft-legal triathletes. The original session was considerably longer and more demanding. This version has been adapted to provide many of the same physiological benefits in a time-efficient workout that’s suitable for a wider range of athletes.
If you’re interested in the research behind this session, you can read more in my Science on Sunday article, or if you’re looking for a bigger challenge, you’ll also find the original 60-minute version here.
Today’s Workout
10-Minute Variable Power Cycle (30 Minutes Total)
Warm-Up
- 10min Level II
Main Set
- 60sec Level III
- 10sec Level V+++
- 70sec Level I
- 40sec Level V++
- 70sec Level I
- 90sec Level V
- 70sec Level I
- 20sec Level V++
- 70sec Level II
- 30sec Level V++
- 70sec Level III
Cool-Down
- 10min Level II
Post-Ride
- 10min Stretching
Total Riding Time: 30 minutes
Why You’re Doing This Session
Unlike traditional interval sessions that repeat the same effort over and over, this workout constantly changes both the intensity and the duration of each effort. That forces you to continually adapt, making it an excellent session for improving your ability to respond to changing race situations.
It’s particularly valuable for draft-legal triathletes, criterium racers and road cyclists, where repeated accelerations, recoveries and changes in pace are common. Mountain bikers and gravel riders will also benefit from the frequent changes in effort required by varied terrain.
Despite its relatively short duration, this session develops aerobic fitness, anaerobic power, pacing skills and the ability to recover quickly between hard efforts.
What You Should Focus On
Begin with an easy 10-minute warm-up at Level II, maintaining a cadence of around 90rpm to prepare your body for the changing demands ahead.
The workout then moves through a series of efforts ranging from steady aerobic riding to short, explosive accelerations. Resist the temptation to attack every hard effort at maximum intensity. Instead, aim to ride each effort at the prescribed level while maintaining smooth, controlled pedalling.
The recovery periods are just as important as the hard efforts. Use them to regain control of your breathing without completely switching off, so you’re ready for the next change in intensity.
Because every interval is different, stay mentally engaged throughout the workout and focus on transitioning smoothly from one effort to the next.
Common Mistakes To Avoid
The biggest mistake is treating every high-intensity effort as an all-out sprint. Save your energy for the entire workout rather than emptying the tank early.
Another common error is losing concentration during the recovery periods. Keep pedalling smoothly and prepare mentally for the next change in intensity.
Finally, don’t become fixated on chasing power numbers. Focus on riding smoothly, maintaining good cadence and matching the intended effort of each interval.
Coach Ray’s Tips
Have your workout loaded and ready before you begin so you can focus entirely on riding rather than watching the clock.
Because the intensity changes frequently, it helps to look ahead to the next effort so you’re mentally prepared before each transition.
Good cooling is essential indoors, so use a fan, keep a drink bottle close by and stay hydrated throughout the session.
Remember, this workout is about adaptability. Smooth transitions between efforts are far more valuable than producing one or two exceptionally high power numbers.
Ride This Workout on Velocity
I’ve recorded this workout on Velocity, making it easy for you to ride whenever it suits your schedule. Simply load the replay workout, jump on your bike and let me guide you through every interval.
Whether you’re preparing for a triathlon, road race or simply looking to improve your cycling fitness, it’s a great way to experience structured indoor training.
👉 Ride this workout on Velocity:
https://app.vqvelocity.com/vod/12106?s=eapbh1
If you don’t already have a Velocity account, you can create one with a FREE 14-day trial and access this workout along with many more structured cycling sessions.
👉 Start your FREE 14-day Velocity trial here:
http://app.vqvelocity.com/join?a=rhs956
I’d love to hear how you found the session and what you thought of the constantly changing intensity profile.
If you enjoyed this workout, please share it with a friend and don’t forget to check back next Sunday for another Sunday Smart-Trainer Session.