Treadwell

Guides

Straight answers about treadmill accuracy, pace, and indoor running. We measure belts with a tachometer for a living, so the numbers here are real.

Is your treadmill's distance accurate? Here's how to check

What the research says, what we've measured ourselves, and four ways to check your machine.

Why your watch and your treadmill never agree (and which one is right)

What your watch is really doing indoors, what the treadmill display actually reports, and how to find the real number.

How to calibrate a treadmill (and how to tell if yours needs it)

How to tell whether your treadmill needs calibrating, how to check its real speed yourself, and who should actually do the work.

Treadmill pace vs road pace: why the same effort feels different

What the 1% incline rule actually fixes, why the belt still feels harder some days, and the one gap no pace conversion can close.