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Without the burden of races, Colorado’s long-distance runners are shattering trail records

Fastest known times are exploding as runners use solo sufferfests to compete in the contest-killing era of social distancing

60 years ago, the first woman to complete a U.S. marathon ran to the top of Pikes Peak and back down again

Now, hundreds of women gather each year to follow Arlene Pieper Stine's tracks in running’s ultimate challenge, the Pikes Peak Ascent and Marathon

How exercise is helping extreme athletes and others in Colorado battle addiction

"It's a community that welcomes you with open arms"

What makes this Golden woman run 279 miles on one hour’s sleep?

How a high school science teacher embraced the ultramarathon, where runners train in saunas, surgically remove toenails and regularly hallucinate during runs