Running apps, race signs and treadmills mix kilometers and miles. 1 mile = 1.609344 km and 1 km = 0.621371 miles. Here are the distances runners ask about most.
In this guide
- Popular race distances
- Km to miles chart
- Quick mental trick
- Pace conversion
- Convert any distance
Popular race distances
| Race | Kilometers | Miles |
|---|---|---|
| 5K | 5 km | 3.11 mi |
| 10K | 10 km | 6.21 mi |
| Half marathon | 21.0975 km | 13.1 mi |
| Marathon | 42.195 km | 26.2 mi |
| 50K ultra | 50 km | 31.07 mi |
Km to miles chart
| Km | Miles |
|---|---|
| 1 | 0.62 |
| 2 | 1.24 |
| 3 | 1.86 |
| 5 | 3.11 |
| 8 | 4.97 |
| 10 | 6.21 |
| 15 | 9.32 |
| 20 | 12.43 |
| 50 | 31.07 |
| 100 | 62.14 |
Quick mental trick
To turn km into miles, multiply by 6 and divide by 10 (10 km → 6 mi). To turn miles into km, multiply by 1.6 (5 mi → 8 km).
Pace conversion
A pace of 6:00 per km equals about 9:39 per mile. Multiply your per-km pace by 1.609 to get per-mile pace.
Convert any distance
Use our km to miles and miles to km converters, or km/h to mph for speed.
Frequently asked questions
How long is a 5K in miles?
3.1 miles.
Is a mile longer than a kilometer?
Yes, a mile is about 1.6 times longer.
Why is a marathon 42.195 km?
The distance was standardised from the 1908 London Olympics route.
