Maggie Guterl became the first woman to win the Big Dog Backyard Ultra, the race with no end
Dave Mackey was the first person to run the Leadville Trail 100 Run with a prosthetic leg
After switching from marathons to ultras six years ago, Boulet continues to blow away the competition
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By offering minimal prize money, the sport’s most prestigious race might be excluding the best runners
Yes, raw speed helps. But it isn’t everything.
When Mirna Valerio first began running ultramarathons, she immediately got a lot of attention—but not for the reasons you might expect
'Leadman: The Dave Mackey Story' chronicles its namesake character making a return to the iconic Leadville 100 ultramarathon
She's the first person to finish the Leadville Race Series and the Grand Slam of Ultrarunning in a single season
After spending days in the Arctic wilderness, running 100 miles on trail is a piece of cake
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