Convert 42 kilometers to miles — result, formula and a quick reference table.
1 kilometer equals 0.6214 miles, so 42 km = 26.0976 miles.
42 km to miles converts to 26.0976 miles. 1 kilometer equals 0.6214 miles, so 42 km = 26.0976 miles.
42 km is essentially the full marathon distance (42.195 km).
To convert any value, use the formula miles = kilometers ÷ 1.609344. For other amounts, see the quick table above or open the full unit converter.