Team KO, a group of Obstacle Course Racers and Martial Artists, featured on NBC’s new TV show Spartan: Ultimate Team Challenge, band together to share their s

A perfect holiday gift, this beautifully illustrated collection honoring one hundred exceptional “feminist saints” throughout history is sure to inspire wom

An introduction to Spartan Races (races meant to challenge, to push, to intimidate, to test) from one of the "founding few" and creators, Joe De Sena.

New school year, same old problems . . . At Mythos Academy, everyone knows exactly who I am: Rory Forseti, Spartan girl and the daughter of Reapers. Even though

USA TODAY BESTSELLER A Master Chief story and original full-length novel set in the Halo universe—based on the New York Times bestselling video game series! O