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Three of the best marathons in the US and abroad.
The danger of over-hydrating during an endurance race.
Spotify reveals top tunes streamed in 2015.
Here's how extreme temperatures affect your sweat sessions.
Endurance athletes burn twice as much fat on low-carb diets.
From "bonking" to bee stings, be prepared for anything.
Just make sure you try these on a stationary bike.
We sat down with Dean Karnazes to talk training, food, and more.