By Mario Fraioli, Published Jun. 2, 2011
12. What was Josh Cox’s marathon split en route to his U.S. 50K record of 2:43:45 this past January?
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Mario Fraioli is a senior editor at Competitor magazine. A cross-country All-American at Stonehill College, he coaches both elite and age-group runners and was the men's marathon coach for Costa Rica at the 2012 Olympics. His first book, The Official Rock 'n' Roll Guide To Marathon & Half-Marathon Training (VeloPress, 2013) is available in bookstores, running shops and online.
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