See how this year's epic race through Colorado's San Juan Mountains played out.
Bogie Dumitrescu came oh-so-close to the 48-hour cutoff.
Lessons learned, Matt Hart is ready to tackle the Hardrock 100 again.
A closer look at one of the hardest race courses in the world.
Want to see what your made of? Test your mettle in one of these crazy-hard races!
Looking for a European-style trail adventure? Consider the "Softrock 100" in Colorado.
The 26-year-old Catalan runner triumphed over a challenging course and a deep field to win in 22:41:35.
Record-setting ultra-distance mountain runner will race Colorado's Hardrock 100 on July 11-12.
The Barkley Marathons ultra-distance race in Tennesee is one of the world's hardest running races.
The free-spirited 22-year-old is focused on making an impact in his sport.