U.S. ultrarunner sets ridiculous Mount Denali FKT

Jack Kuenzle set the fastest known time by an hour and a half on the highest peak in North America, covering base camp to summit and back in 10 hours, 14 minutes and 57 seconds

Kilian Jornet’s two Everest summits disputed in new book

Adharanand Finn’s new book The Rise of the Ultra Runners includes Dan Howitt’s detailed analysis of Jornet’s 2017 Everest climbs