How long is a half marathon?


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Marathon A modern day marathon is 26 miles and 385 yards and a half marathon is about 13.1 miles long which was adopted in 1921. ChaCha!

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A full marathon is 26 miles ( 42 km) A half marathon is 13 miles ( 21 km). Thanks for using ChaCha.

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A half marathon is a 13.1-mile race. ChaCha!

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