Many individuals believe that finishing a marathon in 5 hours needs steady running. However nothing might be additionally from the reality. Simply see competitors near completion of a marathon-- say, at mile 19 or mile 23-- and you will see several of them walking. That is not the walking to which I am referring. http://thedataevolution.com/just-how-often-do-you-need-to-run-to-train-for-a-half-marathon