Kilian Jornet summits 177 peaks in eight days

“One of the most difficult things I’ve ever done,” he said

Belgium’s Karel Sabbe demolishes Pacific Crest Trail FKT

The Belgian dentist averaged 94 kilometres a day to complete the 4,270 km trail in just under 47 days

Oregon’s Jason Hardrath obliterates Rocky Mountain Grand Slam FKT

The king of mountain FKTs completed the 122-peak route in just under 40 days