Your Heart Rate Data
bpm max
Best found via a hard field test — 220 minus age is a rough estimate only. A maximal 1-mile effort or the last 400m of a 5K gives a more accurate number.
bpm rest
Measure first thing in the morning before getting out of bed. Average over 3 days for best accuracy.
Heart Rate Reserve accounts for your resting HR, producing more personalized zones — especially accurate for well-trained runners with a low resting HR.
Enter your heart rate data
to calculate your zones
Your 5 Training Zones