Race distances in km and miles
Road races are measured in kilometres, but many runners think in miles. The marathon is 42.195 km (26 miles 385 yards) and the half marathon is exactly half of that.
| Race | Kilometres | Miles | Metres |
|---|---|---|---|
| 5K | 5 km | 3.1069 mi | 5,000 |
| 10K | 10 km | 6.2137 mi | 10,000 |
| Half marathon | 21.0975 km | 13.109 mi | 21,098 |
| Marathon | 42.195 km | 26.219 mi | 42,195 |
Finish times by pace
| Pace /km | Pace /mile | 5K | 10K | Half marathon | Marathon |
|---|---|---|---|---|---|
| 3:30 | 5:38 | 17:30 | 35:00 | 1:13:50 | 2:27:41 |
| 4:00 | 6:26 | 20:00 | 40:00 | 1:24:23 | 2:48:47 |
| 4:30 | 7:15 | 22:30 | 45:00 | 1:34:56 | 3:09:53 |
| 5:00 | 8:03 | 25:00 | 50:00 | 1:45:29 | 3:30:59 |
| 5:30 | 8:51 | 27:30 | 55:00 | 1:56:02 | 3:52:04 |
| 6:00 | 9:39 | 30:00 | 1:00:00 | 2:06:35 | 4:13:10 |
| 6:30 | 10:28 | 32:30 | 1:05:00 | 2:17:08 | 4:34:16 |
| 7:00 | 11:16 | 35:00 | 1:10:00 | 2:27:41 | 4:55:22 |
Convert any pace with the min/km to min/mile or min/mile to min/km converters.
How it’s calculated
miles = km ÷ 1.609344 · finish time = pace × distance
Step by step: marathon at 5:30 per km
- Distance: 42.195 km ÷ 1.609344 = 26.219 miles.
- Time: 5.5 min × 42.195 = 232.07 min = 3:52:04.
- Pace per mile: 5:30 × 1.609344 = 8:51 per mile.
FAQ
Pick a race to see the distance in both units and a pace table for common finish times. Use the pace converters to switch between minutes per kilometre and minutes per mile.
How many miles is a 5K?
5 km is 3.1069 miles. The mile is exactly 1.609344 km.
How many miles is a marathon?
A marathon is 42.195 km, which is 26.219 miles (26 miles 385 yards).
How long is a half marathon?
21.0975 km, or 13.109 miles.
How do I work out my pace?
Divide your finish time by the distance. A 25-minute 5K is 5:00 per km, or 8:03 per mile; use the pace converter to switch units.
Sources
- World Athletics Competition and Technical Rules (road races); NIST Handbook 44 for the mile: Marathon 42.195 km; half marathon 21.0975 km.
Checked by Unitglide on 2026-10-27.