Running’s most intense hill workout: Kilian Jornet’s ridiculous one-hour challenge

Jornet shares his toughest training session: run a vertical kilometre followed by a flat 10K, all in less than an hour

Ryan Sandes breaks his own 100K FKT in South Africa

The South African ultrarunning champion beat his previous record for the 13 Peaks Challenge by two hours

Ultrarunner runs 106K, climbs 10,000m in Double Canmore Quad Challenge

Andy Reed ran the challenge in the Canadian Rockies twice in one go to set the FKT for the route in 26 hours, 33 minutes and 24 seconds