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Three epic choices for runners, bikers, and triathletes.
How do you sweat: "typical," "low-salt," or "salty"?
The toughest obstacles that elite military guys must survive.
The danger of over-hydrating during an endurance race.
Tim Johnson on how he conquered one of America's mightiest peaks.
Get out and go this January with these five adventures.
5K race displays your relationship status on your bib.
We spoke to Jed Mildon after he landed the quadruple backflip.
In "nature's toughest challenge," runners race around Mont Blanc.
6 crucial exercises from a professional obstacle racer and trainer.