Plan your race

Plan race pacing, dial in training paces, and calibrate heart rate zones for distance running.

Education, not medical advice. The result comes only from the published formula and your inputs. How we check our formulas.

The calculators, in order

Start here Running Pace Calculator
Calculate pace per km and mile and project race finish times from one run.
Then Heart Rate Zone Calculator
Calculate personalized training zones with the Karvonen method.
Then VO2 Max Estimator
Estimate aerobic capacity with the Cooper 12-minute run or Rockport 1-mile walk field tests.
Then Walking Calorie Calculator
Estimate calories burned from walking using speed, duration, body weight, and incline.
Then Calories Burned Calculator
Estimate exercise calorie burn from body weight, duration, MET intensity, and incline.