A trail runner in Lake Forest, California shared a terrifying tale of surviving a mountain-lion encounter. Watch here.

An ultrarunner who took home a major prize after this year’s 61 KM OCC at UTMB Mont-Blanc has been disqualified. Joyline Chepngeno, who claimed victory in two high-profile races this year, has now been stripped of both titles and handed a two-year ban from the world of trail running after testing positive for a banned [...]

A woman went for a run in Scotland, walked through an opening in a wooded path, and discovered a huge castle in the misty distance.

A man in southern California went to put on his running shoes and found a rattlesnake living inside. Watch what happens.

You know how people say, “You’ll never regret going on a run”? This runner calls bullsh*t. Here’s her hilarious list of run regrets.

A P.E. teacher from the U.K. ran the Polar Night Marathon while wearing a polar bear suit, and she achieved a Guinness World Record.

Trail running for leisure turned into trail running while being chased by cows for one man, whose escapade made for a very funny video.

Ultrarunner and thru-hiker Tara Dower completed the Appalachian Trail in just over 40 days, setting a new record for the fastest known time.

An ultrarunner did not expect his 50-mile run into Yosemite Valley to end with an unwanted bear hug. Here’s what happened.

Jasmin Paris made history when she became the first woman to complete the grueling 100-mile, off-trail race known as the Barkley Marathon.