Pace Calculator
Plan your race or training run by calculating pace, finish time, or distance. Switch between miles and kilometers, compare race predictions, and check your splits instantly.
Pace per mile
8:02 min/mi
Distance and time
3.11 mi in 0h 25m 0s
Minutes per mile
8:02 min/mi
Minutes per kilometer
5:00 min/km
Split times
Cumulative mile splits for your effort.
| Split | Cumulative time |
|---|---|
| Mile 1 | 8:02 |
| Mile 2 | 16:05 |
| Mile 3 | 24:07 |
| Mile 4 | 25:00 |
Equivalent race predictions
Based on the Riegel formula, using your current result as the baseline prediction.
5K
0h 24m 58s
10K
0h 52m 4s
Half Marathon
1h 54m 53s
Marathon
3h 59m 31s
How to Use
- Choose whether you want to calculate pace, finish time, or distance.
- Select miles or kilometers, then pick a common race distance preset or enter a custom distance.
- Enter your time or pace values in hours, minutes, and seconds.
- Review your result, cumulative split table, and predicted equivalent times for other race distances.
Frequently Asked Questions
How do I calculate my running pace?
Divide your total finish time by the distance you ran. For example, a 50-minute 10K equals 5:00 per kilometer, while the same effort is about 8:03 per mile.
What is a good pace for a beginner runner?
A good beginner pace is one you can sustain while breathing comfortably and staying consistent. Many new runners start around 10 to 13 minutes per mile, but fitness, terrain, and weather all matter.
Why do race predictions change with distance?
Most runners slow slightly as race distance increases. This calculator uses the Riegel formula, which estimates how performance changes over longer efforts based on your current result.
Should I train by pace or by effort?
Both can be useful. Pace gives you a clear target for workouts and race planning, while effort helps you adapt to hills, heat, wind, and fatigue. Many runners use a mix of both.