Belgian Merijn Geerts and Ivo Steyaert have set a new world record in the Backyard Ultra by running 831.5 kilometers in five days and nights, which is nearly twenty marathons. #BackyardUltra #wereldrecord #ultralopen (translated)
Belgian Merijn Geerts and Ivo Steyaert have set a new world record in the Backyard Ultra by running 831.5 kilometers in five days and nights, which is nearly twenty marathons. #BackyardUltra #wereldrecord #ultralopen (translated)