Runner's World is the ultimate resource for runners of all levels, from beginners lacing up their first pair of running shoes to seasoned athletes chasing their next milestone. With decades of ...

Marathon developer Bungie has dropped a sneak peek at what's to come when Marathon's second season launches next month. Looking more like Destiny than ever — from the tense atmosphere to the ...

For decades, many runners, and even coaches, have assumed that being a runner meant never walking during a training run or race. Even the most accomplished runners would apologize when they walked at ...