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Miles to Km Converter

Convert miles to kilometers and km to miles instantly — distances and speed limits (mph ↔ km/h) in one tool.

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Distance

Speed

Miles ↔ Kilometers

Definition: 1 mile = 1.609344 km, so 1 km ≈ 0.6214 miles. The same factor converts speeds: 60 mph ≈ 97 km/h, 100 km/h ≈ 62 mph. Quick estimate: multiply miles by 1.6 (or km by 0.6). A marathon's 26.2 miles is 42.2 km; a 5K run is 3.1 miles.

Frequently Asked Questions

How many kilometers is a marathon (26.2 miles)?

26.2 miles = 42.16 km — the official marathon distance is 42.195 km. A half marathon is 13.1 mi / 21.1 km, and a 5K is 3.11 miles.

What is 60 mph in km/h?

60 mph = 96.6 km/h. Typical U.S. highway limits of 65-75 mph equal roughly 105-121 km/h.

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