Just how badass are you? Extreme Adventure Races

From Men’s Fitness Magazine..  Maybe you’ve tackled a marathon and even mustered the grit to try a military-style obstacle course race. But how about ignoring your screaming hamstrings for 26 miles at 40 degrees below zero? Or competing in a 100-mile run so tough that only 13 people have everfinished? Men’s Fitness scoped out the toughest, most badass footraces around the world, rating each …