AthensMarathon

How Long Is a Marathon?

Understanding the Standard Marathon Distance Today The standard marathon distance today is 42.195 kilometers or 26.2 miles. This distance was established by the International Association of Athletics Federations (IAAF) in 1921, and has been recognized as the official marathon distance ever since. Interestingly, the original marathon distance from the ancient Greek story was approximately 25 miles. It wasn’t until the…