By Mario Fraioli, Published Aug. 1, 2011, Updated Mar. 15, 2012 at 5:10 PM UTC
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.
Start your FREE subscription to Competitor Digital today!
Get our monthly digital magazine, weekly running content & exclusive offers delivered to your inbox.
© 2014 Competitor Group Inc. All Rights Reserved