Tanner Garrity

Fitness-wise, Ken Rideout has been in his share of scraps. When we were putting together The Globetrotting Guidebook earlier this year — a user-friendly guide in which dozens of runners nominated their all-time favorite running routes — Rideout’s entry stood out for its intensity. He submitted a 48-miler through the Central Mongolian desert, one part of the notorious Gobi March footrace. With that in mind, I wouldn’t have expected a fitness trend like HYROX to throw Rideout for much of a loo…