Half Marathon Pace Calculator
Calculate your running pace and finish time for 13.1 mile races with training insights
Calculate Half Marathon Pace & Time
Half Marathon Quick Facts
Half Marathon Pace Chart
| Finish Time | Pace/Mile | Pace/Km | Speed (km/h) |
|---|---|---|---|
| 1:03:18 | 4:50 | 3:00 | 20.0 |
| 1:13:51 | 5:38 | 3:30 | 17.1 |
| 1:24:24 | 6:26 | 4:00 | 15.0 |
| 1:34:56 | 7:15 | 4:30 | 13.3 |
| 1:45:29 | 8:03 | 5:00 | 12.0 |
| 1:56:02 | 8:51 | 5:30 | 10.9 |
| 2:06:35 | 9:39 | 6:00 | 10.0 |
| 2:17:08 | 10:28 | 6:30 | 9.2 |
| 2:27:41 | 11:16 | 7:00 | 8.6 |
| 2:38:14 | 12:04 | 7:30 | 8.0 |
Training Pace Zones
Easy Pace
15% slower than race pace
Build aerobic base, recovery runs
Tempo Pace
5% faster than race pace
Threshold training, sustained efforts
Interval Pace
15% faster than race pace
Speed work, VO2 max intervals
Race Strategy
Start 10-15 seconds per mile slower than goal pace
Hydrate every 15-20 minutes after mile 3
Negative split: second half 30-60s faster
Practice race pace in training runs
Performance Levels
Understanding Half Marathon Pace
What is Running Pace?
Running pace is the time it takes to cover a specific distance, usually expressed as minutes per mile or minutes per kilometer. For a half marathon (21.0975 km or 13.1094 miles), your pace determines your total finish time.
Pace Calculation Formula
Pace = Total Time ÷ Distance
For half marathon: Pace = Finish Time ÷ 21.0975 km
Why Pace Matters
- •Helps set realistic race goals
- •Guides training intensity and pacing strategy
- •Prevents starting too fast and burning out
- •Enables effective race-day execution
Training with Pace Zones
Use your half marathon pace to establish training zones. Different paces target different energy systems and adaptations crucial for distance running performance.
Easy Pace (65-75% max HR)
Builds aerobic base, promotes recovery
Tempo Pace (80-85% max HR)
Improves lactate threshold, race simulation
Interval Pace (90-95% max HR)
Develops VO2 max, neuromuscular power
Pacing Strategy
Start conservatively and aim for negative splits. The ideal strategy is to run the first half 30-60 seconds slower than your second half to account for fatigue and maintain strong finish.