Converters Distance
Kilometres to miles
Kilometres
Miles 3.1069
Decimals
Live · 1 mile = 1609.344 m exactly
Distances people actually run
1 km 0.6214 mi
5 km 3.1069 mi
10 km 6.2137 mi
21 km 13.1094 mi
42 km 26.2188 mi
100 km 62.1371 mi
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320 × 100
One kilometre is 0.621371 miles, because the international mile is defined as exactly 1,609.344 metres. Multiply kilometres by 0.621371 to get miles. A 5K is 3.11 miles, a 10K is 6.21 miles, a half marathon is 13.11 miles and a marathon is 26.22 miles.
How to convert kilometres to miles
1 Enter the distance in kilometres.
2 Read the mileage below, or take one of the race distances from the table.
3 Press ⇄ to go from miles back to kilometres.
The closest easy approximation is the Fibonacci trick: consecutive Fibonacci numbers are roughly a kilometre-to-mile pair, because the golden ratio, 1.618, is within half a per cent of 1.609. Five kilometres is about three miles, eight is about five, thirteen is about eight. It falls apart above about 100, where the accumulated error is a mile and a half.
Questions
3.10686 miles, usually quoted as 3.1. A 10K is 6.21 miles and a marathon, at 42.195 km, is 26.219 miles.
Sources
NIST — international yard and pound agreement of 1959World Athletics — road running distancesAdvertisement
300 × 250
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