Ultrarunning

Cancer Patient Runs Ultras To Raise Funds For Cancer Research

Mark Thornberry, 57, was diagnosed with liver cancer. Now he's running ultras to help raise funds for cancer research at his hospital.

16 Weeks to Your First 50K

A guide to running your first 50K including key intensity workouts and a free 16-week training plan.

Ultramarathon Tip: Succeed by Limiting the Negatives

Jason Koop explains why almost anyone can finish an ultramarathon.

The Top 4 Training Mistakes in Ultrarunning

Where does training go wrong for ultras?

Photos: 2016 Zion 100 Miler

Check out these awesome shots from a muddy day in one of America's coolest national parks!

A Runner’s Guide To Conquering The Grand Canyon

What you need to know before you go.

Photos: 2016 Way Too Cool 50K

Check out these awesome shots from one of the country's most competitive 50Ks!

Video: Three American Ultrarunners Triumph at Mont Blanc

Enjoy this 22-minute documentary by Los Angeles-based filmmaker Billy Yang, who chronicled the adventure.

Western States Endurance Run Announces Zero-Tolerance Doping Policy

The announcement comes after two recent uproars surrounding convicted dopers.

Ultrarunners Chase Wolverines in Citizen Conservation Project

A conservation group founded by National Geographic Emerging Explorer Gregg Treinish has recruited ultrarunners to help search for

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