What is the standard distance of a Marathon race?

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Accepted Answer

1. The official marathon length set by international rules is $42.195\ 	ext{km}$. 
2. This distance is used for the Olympics and world records. 
3. Option **(b)** matches the standard distance $42.195\ 	ext{km}$, so it is correct.
FINAL_ANSWER: b

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Answer

Answer