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How do you perform a 20 minute FTP test?

Author

William Rodriguez

Published Jan 19, 2026

The procedure is actually very easy: a starting warm-up followed by a 20-minute all-out effort, where you have to ride as hard as you can. Finally, you'll have to multiply the average power registered during these 20 minutes by 0,95: the result is your Functional Threshold Power.

How do you do a 20 minute FTP test?

The protocol itself is actually quite simple: after a substantial warmup, start a lap on your head unit, and smash it for 20 minutes, as hard as you can. The average power recorded for the 20-minute test is multiplied by . 95 to estimate what your “hour of power” (or Threshold Power) would be.

What is a good 20 minute FTP?

The 95 per cent is a number based off averages, but for many amateurs, the power drop-off between 20 and 60 minutes can be much greater than five per cent, so those athletes might be better off using 92 or even 90 per cent.

How do you pace a 20 minute FTP test Zwift?

FTP test options

First, there's the traditional 20-minute time-trial test. After a warm-up, including a 5-minute effort, you perform a 20-minute interval at maximum effort. Record your average power and then subtract 5 per cent to determine your FTP (Zwift will do this automatically for you).

Is FTP for an hour or 20 minutes?

Simply put, FTP is the average number of watts that a rider can sustain in an hour, and acts as a current measure of fitness. Ideally, it refers to a steady effort, not the up-and-down levels you might see looking at your power from a hilly ride or cyclocross race.

25 related questions found

Is 20 min FTP test accurate?

Many coaches and athletes define functional threshold power (FTP) as 95 percent of the average power from a 20-minute, steady-state, all-out time trial. While this may provide an accurate FTP for about 50 to 60 percent of the population, it doesn't hold true for a large number of athletes.

How do I do a FTP test on wattbike?

The best way to measure your FTP is with a 20 minute test on the Wattbike. Once you've completed the 20 minute test, note your average power and average heart rate. Tip 1: Make sure you start the 20 minute test at an intensity you can sustain throughout but also one that allows you to give maximal effort.

How do I prepare for an FTP test?

14 steps to the perfect FTP test

  1. Rest. Preparation for an FTP test begins many days before the test. ...
  2. Be prepared. Get a good night's sleep and make sure your last meal was a good few hours before the test. ...
  3. Overcome the fear. ...
  4. Be consistent. ...
  5. Know your numbers. ...
  6. Don't be a hero. ...
  7. Be cool. ...
  8. Warm-up adequately.

How accurate is an FTP ramp test?

You'll find a full ramp test to be fairly accurate. Either up 5 watts per minute or 25 watts every four minutes. They take a lot longer obviously, which is why they are more accurate.

What is a reasonable FTP?

The article claims that a typical fit cyclist might be able to crank out 250 to 300 watts as an average for a 20 minute FTP (functional threshold point) test, while the pros usually average 400 watts.

What is a good FTP score?

FTP in watts for males

There's also a spike at 250W because it's a nice round number that's very close to the average FTP. 49% of people have an FTP below 260W. 44.3% of people have an FTP of 270W or more. 6.7% of people have an FTP between 260W and 270W.

How often should I do FTP test?

Now to get to the big question: how often should you take an FTP test? We recommend every four to six weeks depending on the training plan you're undertaking. This usually allows your body enough time to adapt to your training and make measurable improvements.

How do you test an outdoor FTP?

How to Calculate Your FTP By Testing Outdoors

  1. Warm-up for about 20 minutes. Don't soft-pedal the whole time; mix in some bursts of intensity.
  2. Do your 8- or 20-minute effort. ...
  3. Cool down for 10 minutes.
  4. Calculate the average power of your test effort(s) and reduce it by 5 or 10%, depending on the test you did.

How is 30 minute FTP test calculated?

30-minute test – where your average power for 30 minutes will be a close estimate of your actual FTP. 2 x 8-minute test – where you take the higher number between two back-to-back 8-minute efforts then subtract 10%. The process; ride all-out for 8 minutes, rest for 10 minutes, ride all-out for another 8 minutes.

How do you read FTP results?

Once you know your average power for 20 minutes (for example 200 watts) you can multiply it by 95% to estimate your FTP. So if your CP20 power output is 200 watts, a good estimation of your FTP would be 190 watts. My experience of this method suggests it's surprisingly accurate.

Which is better FTP test or ramp test?

Traditional FTP testing, of the one-hour or even 20-minute variety, is difficult to pace and very taxing on the body. These are better suited for more experienced athletes. If you're a novice, the Ramp test is probably the best option, because there's less pacing involved.

How do you calculate FTP?

You can estimate FTP with your best recent 20-minute power value (either from a dedicated 20-minute test or a sufficiently hard 20-minute effort from a race or workout). Multiply that value by 95% to get your FTP. You can also estimate FTP from a recent best 45-60 minute power output.

Is 200 watts good cycling?

No exact watt number is appropriate for all riders. Generally speaking, a beginner cyclist may average around 75–100 watts in a 1-hour workout. A fit participant will average more than 100 watts, and pro cyclists can reach 400 watts per hour.

Is the FTP test hard?

It's “hard.” You are going hard, and progressively harder, for 20 minutes, so you should get mentally comfy with that. Peloton Power Zone instructor (and cycling champ!) Christine D'Ercole recommends not taking it too seriously: “Riders should not be afraid of the FTP test because it is not a judgment on one's fitness.

Should you rest the day before an FTP test?

Rest. Proper rest in preparation for a ramp test is integral for accurate FTP measurement. You may be tempted to go into the test with the freshest of legs, but your FTP test shouldn't be a once-in-a-lifetime effort that you won't be able to recreate.

What should I do the day before my FTP test?

Testing requires hard work and we request that riders are well fuelled beforehand, so ensure you have had a well-balanced meal that includes a healthy dose of complex carbohydrates about 3-4 hours prior to testing and then a small, simple carbohydrate-based snack like a banana one hour before the test.

How do I improve my FTP on a Wattbike?

4 ways to improve your fitness performance with Wattbike data

  1. USE POLAR VIEW TO IMPROVE YOUR PEDALLING TECHNIQUE. ...
  2. FIND OUT YOUR FTP. ...
  3. TRAIN WITHIN YOUR ZONES. ...
  4. GET TO KNOW YOUR POWER TO WEIGHT RATIO (W/KG)

How do you use FTP for training?

Ride for 20 minutes at FTP power, or if using a heart rate, look to build it up to your threshold heart rate after eight to ten minutes. Ten minutes recovery (zone one). Ride for 20 minutes at FTP power, or if using a heart rate, look to build it up to your threshold heart rate after eight to ten minutes.