42calMarathon Pace CalculatorMarathon Pace Calculator
Turn a goal time into pace per mile and per kilometer, with splits.
13.1 miles / 21.1 km
Average Pace
8:01 / mile
4:59 per kilometer
Average Speed
7.5 mph
12.1 km/h
Projected Finish Times
5K
24:53
10K
49:46
Half Marathon
1:45:00
Marathon
3:30:00
Race Splits
Cumulative elapsed time at each course marker.
How runners use this tool
- Lock in goal splits for your next marathon or half marathon.
- Switch between miles and kilometers when your goal race uses a different unit.
- Dial in training paces that match your target finish time.
Marathon pace by finish time
| Finish time | Per mile | Per km |
|---|---|---|
| 3:00:00 | 6:52 | 4:16 |
| 3:30:00 | 8:01 | 4:59 |
| 4:00:00 | 9:09 | 5:41 |
| 4:30:00 | 10:18 | 6:24 |
| 5:00:00 | 11:27 | 7:07 |
How Pace Is Calculated
Pace is simply your total finish time divided by the race distance. For a marathon (26.2188 miles), a 4:00:00 finish means 240 minutes / 26.2188 = 9:09 per mile. The calculator also converts to metric pace (minutes per kilometer) by dividing total time by the distance in kilometers. Projected finish times for other distances use a linear extrapolation of your pace, which works well for even-split strategies but does not account for the physiological cost of longer distances. For distance-adjusted predictions, use the Race Time Predictor which applies the Riegel formula.
Frequently Asked Questions
Find your next race
Related Tools
- Race Time Predictor — Predict finish times across distances using the Riegel formula
- Training Pace Zones — Calculate your VDOT and five training zones from a recent race
- Difficulty Analyzer — Score course difficulty and estimate pace adjustments
- Fuel Planner — Plan race-day nutrition based on your target time
Get to the start line with nothing forgotten
MarathonOS puts your race countdown on your Lock Screen and keeps every race-week checklist on your phone. Checklists and your race report are free for your first race.
Scan to download