How we find comparable runs

When you view your run's efficiency, we show you other runs that are similar enough to compare fairly.

We look for runs that match:

• Same surface — road with road, trail with trail, treadmill with treadmill
• Similar effort — heart rate within a few percent
• Similar length — duration and distance roughly the same
• Same shoes — if you used gear for that run

Richer history = tighter matches. If you have many runs, we use stricter criteria (e.g. ±5% on pace and heart rate). With fewer runs, we relax to ±10–20% so you still get useful comparisons. The more you train and log, the more precise your comparable runs become.