The Ultra-Trail du Mont-Blanc and its sister races are drawing more Americans than ever.
The two-time Western States champion recently released his first book, Hal Koerner's Field Guide To Ultrarunning.
Here's what it means for those wanting to do the popular Rim-to-Rim-to-Rim run.
One of ultrarunning's most accomplished stars shares his philosophy on long runs, strength training, improving your technical skill set and
The Colorado native shares some details about his training and also provides some tips for Leadville rookies.
Badwater Ultramarathon champion Harvey Lewis has a penchant for endurance-related adventures.
He started running to kick a smoking habit, and his race resume is now an impressive one.
Looking for a European-style trail adventure? Consider the "Softrock 100" in Colorado.
Eighty three runners made it across the finish line of the grueling 135-mile race.
The national park will release a new draft of its backcountry management plan this fall to deal with overcrowding issues.