Fleet feet blaze way to fast feats on trails, cliffs, peaks

This Sunday, Oct. 1, 2017, photo provided by HOKA One One shows professional trail runner Tim Freriks, 26, who broke the single crossing record (rim-to-rim, or R2R) in the Grand Canyon, Arizona. Freriks blazed from the North Rim to the South Rim at a blistering pace, crossing the 21-mile (34-kilometer) chasm to claim what is called the “fastest known time,” or FKT. Freriks’ “rim to rim” run in under 2 hours and 40 minutes was one of three notable marks recorded this month alone. (Sunny Margerum/HOKA One One via AP)