Calculate running pace, predict marathon finish times. Supports 5K, 10K, half marathon, full marathon.
:min/km
hms
Pace
5:30
min/km
Finish Time
3:52:17
Speed
10.9
km/h
Predicted Times
5K
-
10K
-
Half
-
Marathon
-
Note
Predictions use Riegel formula. Actual times vary by terrain, weather, fitness.
Pace Guide
| Level | Pace/km | 5K | Marathon |
|---|---|---|---|
| Beginner | 7:00-8:00 | 35:00-40:00 | 4:55-5:37 |
| Intermediate | 5:30-6:30 | 27:30-32:30 | 3:51-4:34 |
| Advanced | 4:00-5:00 | 20:00-25:00 | 2:49-3:30 |
| Elite | 3:00-3:30 | 15:00-17:30 | 2:07-2:28 |
FAQ
What is running pace?
Time to run one kilometer. Measured in min/km.
Prediction accuracy?
Riegel formula. Within 5-10% for trained runners.
Good marathon time?
Average 4:30-5:00. Under 4 hours is good. Under 3 is excellent.
How to improve?
Intervals, tempo runs, long runs, consistency.
Pace vs speed?
Pace = min/km. Speed = km/h. Pace = 60/speed.