Pace Calculator
Calculate your running pace, finish time, or distance — three modes in one tool. See your pace in both min/mile and min/km, your speed in mph and km/h, and projected finish times for every standard race distance from 5K to marathon.
Choose a calculation mode
Select what you want to calculate. Enter two values and the calculator finds the third.
Know how far and how long you ran. Find your pace.
Know your pace and your race distance. Find your finish time.
Know your pace and how long you ran. Find the distance covered.
Pace vs speed
Pace = time per distance unit (min/km or min/mile). Speed = distance per time unit (km/h or mph). Runners use pace; cyclists and many apps show speed. Both are shown in the results.
Race projections
After calculating your pace, the results show projected finish times for 5K, 10K, half marathon, and full marathon — assuming you hold the same pace.
What is running pace?
Running pace is the time it takes to cover one unit of distance — expressed as minutes per kilometre (min/km) or minutes per mile (min/mile). It is the primary metric runners use to measure and control effort during training and racing.
A pace of 5:00/km means you cover one kilometre every five minutes. The same runner at the same speed would show a pace of approximately 8:03/mile. Pace is the inverse of speed — slower pace = lower speed number, faster pace = higher speed number.
Pace formulas
Common pace benchmarks
Standard race distances
Frequently asked questions
What is a good running pace for beginners?
For most beginners, a comfortable starting pace is 7:00–10:00 per kilometre (11:15–16:00 per mile) — slow enough to hold a conversation. Building aerobic base at easy paces for 8–12 weeks before attempting faster training reduces injury risk significantly.
How do I convert min/km to min/mile?
Multiply your min/km pace by 1.60934. For example, a 5:00/km pace equals 5:00 × 1.60934 = 8:03/mile. This calculator does the conversion automatically and shows both units in the results.
What pace do I need for a sub-30 minute 5K?
A sub-30 minute 5K requires a pace faster than 6:00/km or 9:39/mile. Specifically: 30:00 ÷ 5 km = 6:00/km exactly. To finish in 29:59, you need to average just under 6:00/km — approximately 5:59/km or 9:38/mile.
What is a good marathon pace?
A sub-4 hour marathon requires a pace of 5:41/km or 9:09/mile. Sub-3:30 needs 4:58/km or 8:00/mile. Sub-3 hour requires 4:15/km or 6:50/mile. Most first-time marathoners target 5:00–6:30/km (8:00–10:30/mile).
Should I run by pace or heart rate?
Both have value. Pace is objective and easy to measure. Heart rate reflects actual physiological effort — the same pace feels harder on a hot day, at altitude, or when fatigued. For easy aerobic runs, heart rate (Zone 2) is often a better guide. For race-specific work, pace targets are more practical.
Related health calculators
These tools pair naturally with pace and running training.
Disclaimer
Pace and finish time calculations are mathematical projections based on constant pacing. Actual performance depends on terrain, elevation, weather, fatigue, race conditions, and individual fitness. Use these figures for training planning and goal-setting only, not as guaranteed race outcome predictions.