| km | miles |
|---|---|
| 1 | 0.621 |
| 5 | 3.107 |
| 10 | 6.214 |
| 21.0975 | 13.109 |
| 42.195 | 26.219 |
| 50 | 31.069 |
| 100 | 62.137 |
The exact factor
One mile is exactly 1.609344 kilometres, so 1 km = 0.621371 miles. To convert by hand, multiply kilometres by 0.62, or multiply by 5 and divide by 8 for a quick estimate (80 km ≈ 50 miles).
Race distances
5K = 3.11 miles, 10K = 6.21 miles, a half marathon (21.0975 km) = 13.1 miles and a marathon (42.195 km) = 26.2 miles. A speed of 100 km/h is about 62 mph.
Frequently asked questions
How many miles is 5 km?
3.107 miles.
How many miles is 5 km?
3.11 miles.
Is a nautical mile the same?
No. A nautical mile is exactly 1.852 km, used at sea and in aviation.