Stephanie Simpson to attempt Canadian 100-mile record

The Canadian winner of Big’s Backyard Ultra will be aiming to run 160 kilometres in 14:45 on June 12 at the Montreal 24-hour Endurance Challenge

Zach Bitter shatters 100-mile world record at Six Days in the Dome

Bitter ran four consecutive sub-3 hour marathons on an indoor track

Zach Bitter breaks 100-mile trail world record

American Zach Bitter races 100 miles in 12:08:36 at the Tunnel Hill 100-mile race in Vienna, Illinois