The versatile road shoe is put under the microscope in our latest edition of Shoe Talk.
It's also good to mix up your workouts and keep your muscles guessing. The one-legged crunch is a good example.
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It's her second age-group record in 2015 alone.
if you couldn't make it to California for the World's Fastest 5K, watch it all here.
In what served as a Boston Marathon warm-up for a few top runners, the Rock ‘n’ Roll San Francisco Half Marathon took place
Boston Marathon race director Dave McGillivray reflects on the 2014 race and his favorite memories.
The 2015 Carlsbad 5000 was the 30th edition of the "World's Fastest 5K"
Bernard Lagat sets the masters world record at the 5K road distance.
Two-time defending champions Chris Mocko and Elle Pishny finish third and second, respectively.