by Matt Fitzgerald, Published Feb. 10, 2010, Updated Feb. 19, 2013 at 8:47 AM UTC
Everyone is talking about it. Almost nobody, it seems, is doing it. Written by: Matt Fitzgerald I like to do some of my running at San
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