10 Kilometers is equal to 6.2 Miles There are 6.2 miles in a 10k race. 1 mile = 1.609344 kilometers. And 1 kilometer = 0.621371 miles So, 10 kilometers would be 10 x .621371192 which equals 6.213712 miles
www.calculatorpro.com is the best site I can recommend then go to conversion to convert 10K to number of miles. Not only that but it is very useful to all kinds of conversion you may need in the future.
A 5k is 3.1 miles and a 10k is 6.2. A marathon in 26 miles and a half marathon is 13. these are the 4 large events in cross-country runningm but the distance applies to everything, biking, driving ect.