Distance running

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Summer Kicks The best running shoes for marathons, sprints, and more.
watchOS 2 Third parties can now use Apple watch's accelerometer and HRM.
Carb Cutters Endurance athletes burn twice as much fat on low-carb diets.
NYC Marathon While you recover from Halloween, watch 50,000 people run.
Runner's High Scientists say you may be able to get it without exercise—one day.
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