You may notice that the speed from Stryd is different than the speed on your treadmill display. This is completely normal and expected. The speed display on the treadmill is telling you the average speed of the treadmill belt, rather than your speed as a runner. The belt will slow down when you land and accelerate when you take off (which causes the difference between average belt pace and runner pace). Please read our article Mysterious Treadmill Pace? for why these two values are different.
As you will see below, Stryd's reported pace and distance will be a far better representation of your true running speed.
Stryd's explanation: Mysterious Treadmill Pace?
Fellrnr's explanation: http://fellrnr.com/wiki/Stryd#Treadmill_Problems
DCRainmaker's results: https://www.dcrainmaker.com/2019/01/treadtracker-treadmill-accuracy.html#accuracy-testing
Why is the correct indoor pace important for runners?
Stryd bridges the gap between indoor and outdoor running for the first time. You can directly compare your running intensity from outdoors and bring it indoors to create a seamless training plan. This knowledge helps improve run training because runners can consistently improve and measure their performance year round.
Why does it feel harder to run on the treadmill?
While running at the same pace, running indoors can feel more difficult compared to outdoor running.
- Heat builds up around the body quicker because there is less airflow indoors
- Some runners are not well adapted to run on the indoor surface compared to the outdoor running surface, which can increase the RPE of the runner
- The treadmill surface is jerky. The treadmill belt is constantly slowing down and then speeding back up which will cause your body to engage extra muscles.
Why should you use power on the treadmill instead of pace on the treadmill?
As you can tell, it is hard to dial in on an exact pace while running on the treadmill. You should treat the speed dial on the treadmill as an intensity selector. If you are not reaching the proper power target, you should increase the intensity on the treadmill. If you are too high, you should dial down the intensity.
Can I calibrate Stryd on the treadmill?
We have found that it is extremely rare that Stryd requires a scaling factor be more accurate. It is difficult to execute a calibration testing process that will exceed Stryd’s accuracy and it is rare that you will actually need a scaling factor. There are always outliers. If you would like to adjust the calibration factor on Stryd, you should perform the test as described by fellrnr: http://fellrnr.com/wiki/Treadmill_Calibration
Alternatively, you can verify the accuracy of Stryd by doing a test on the track: How to verify the accuracy of Styrd on the track!
If you have additional questions, contact firstname.lastname@example.org.