Erin Beresini is a journalist covering fitness, endurance sports, and health science. She is the author of ‘Off Course: Inside the Mad, Muddy World of Obstacle Course Racing.’ Like marathons and ...

In just four years, obstacle racing has become the fastest-growing sport in the United States. In 2013, an estimated 3 million people crossed an OCR finish line—that’s more than all half-marathon and ...

It seems like everyone wants to be a ninja these days. TV shows such as “American Ninja Warrior” and “Wipeout” are inspiring people of all ages to traverse monkey bars, scale walls, climb nets and ...

The race bib said it all: “A wedding so badass you have to sign a death waiver to attend.” Rob Butler had popped the question in July: Would I be interested in checking out the obstacle-course ...

For 10-year-old Caleb Shaw, coach Storm Sims is a superhero. Shaw, who has autism, has been attending Sims' parkour classes for a month, and his mother, Kera Shaw, says the difference in his ...