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
If you're an ultrarunner, you'll love this short video of the 2014 Leadville 100 that took place Aug. 16-17 in the high country of Colorado.
Check out the amazing images from this year's Leadville 100.
The medics at ultramarathons get a first-hand look at where races go wrong. Here is their advice to get you to the finish line. When it
Explore these 20 must-do trailheads that travel along all types of terrain.
Stay on two feet and keep your momentum going when you encounter an obstacle while running off-road.
Ultrarunners are a unique breed. For proof, consider the traits of these top ultrarunners.
Check out these stunning images from La Maratona Verticale.
Check out these shots from an epic off-road adventure!