The Biofreeze San Francisco Marathon 52.4 Mile Ultra PT. I: Two Sides Of a Great City

Curious what experiencing The Biofreeze San Francisco Marathon's Ultra is like? Here's an in-depth review of last year's Ultra, courtesy of technology entrepreneur and trail runner, Scott Dunlap! Don't miss your chance to run with him this year - register today! --- Have you ever been to the Haight Ashbury district of San ... More