Calculates missing running variables (Time, Distance, or Pace in min/km and min/mile) with automatic splits for common race distances.
Calculate running/walking pace, time, or distance for 5k, 10k, marathon, or custom distances.
Evidence-based estimations. Consult a physician for personalized guidance.
Official clinical definitions and validated mathematical models
Calculates required split times, speeds, and finish predictions across standard distances (5K, 10K, Half Marathon, Full Marathon).
| Event | Kilometers | Miles | World Record Pace (M) | World Record Pace (W) |
|---|---|---|---|---|
| 5,000 meters (5K) | 5.00 km | 3.107 mi | 2:31 / km (4:04 / mi) | 2:50 / km (4:34 / mi) |
| 10,000 meters (10K) | 10.00 km | 6.214 mi | 2:38 / km (4:14 / mi) | 2:57 / km (4:45 / mi) |
| Half Marathon | 21.0975 km | 13.109 mi | 2:46 / km (4:27 / mi) | 3:05 / km (4:58 / mi) |
| Marathon | 42.195 km | 26.219 mi | 2:55 / km (4:41 / mi) | 3:13 / km (5:10 / mi) |
Estimate calories expended during over 25 activities including running, cycling, swimming, and gym.
Calculate your maximum single-repetition lift (1RM) and percentage training rep ranges.
Find your 5 aerobic training heart rate zones using the Karvonen formula.
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