42 km in miles
42 km = 26.098 miles = 42000 m
Working: 42 ÷ 1.609344 = 26.0976
42 kilometres is 26.1 miles.
One mile is exactly 1.609344 kilometres, so to convert kilometres to miles you divide by that figure — or multiply by 0.621371, which is the same operation. For 42 km: 42 × 0.621371 = 26.098 miles. As a mental shortcut, a kilometre is roughly five-eighths of a mile, and 8 km is almost exactly 5 miles.
Forty-two kilometres is a marathon, near enough: the official distance is 42.195 km, or 26.219 miles. That awkward figure dates from the 1908 London Olympics, where the course was extended so it could finish in front of the royal box — a one-off adjustment that became the permanent standard.
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Frequently asked questions
How many miles is 42 km?
42 km is 26.1 miles. Multiply the kilometre value by 0.621371 to convert to miles.
How many kilometres are in a mile?
One mile is exactly 1.609344 kilometres. Conversely, one kilometre is about 0.621371 miles.
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For any other value, use the full Length Converter on BrainVert.