Running

Marathons

Americans are lining up for marathons, triathlons, and adventure races in record numbers. Here are five marathons and the best reason to enter each one.

Eat to Win

Ultramarathoner Josh Cox missed a world-record bid because of improper fluid balance. Nutritional scientists help explain how a modified diet will help him towards his goal.

Pearl Izumi Streak II Running Shoe

Best Foot Forward: From marathon trainers to minimalist runners, we've got the right shoe for you, including the Pearl Izumi Streak II running shoe.

Asics Gel-Kinsei 4 Running Shoe

Best Foot Forward: From marathon trainers to minimalist trail runners, we've got the right shoe for you, including the Asics Gel-Kinsei 4 running shoe.

Adidas Response Cushion Twenty M Running Shoe

Best Foot Forward: From marathon trainers to minimalist trail runners, we've got the right shoe for you, including the Adidas Response Cushion Twenty M running shoe.

Montrail Rogue Racer Trail Running Shoe

Best Foot Forward: From marathon trainers to minimalist trail runners, we've got the right shoe for you, including the Montrail Rogue Racer trail running shoe.

Brooks Cascadia 6 Trail Running Shoe

Best Foot Forward: From marathon trainers to minimalist trail runners, we've got the right shoe for you, including the Brooks Cascadia 6 trail running shoe.

Saucony Vortex Sleeveless Top

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including Saucony's Vortex sleeveless top.

Oakley Fast Jacket Sunglasses

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including the Oakley Fast Jacket sunglasses.

North Face Better Than Naked Jacket

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including the North Face Better Than Naked jacket.

Wrightsock SLC Socks

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including the Wrightsock SLC socks.

Garmin Forerunner 610 Watch

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including the Garmin Forerunner 610 watch.

New Balance NBx Five-Inch Shorts

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including New Balance's NBx five-inch shorts.

Brooks Sunshield Visor

Cooling Agents: Our favorite ultralight gear for sweltering summer runs, including the Brooks Sunshield visor.