Jim Walmsley runs 6:09:26 for 100K, misses world record by just 12 seconds

Walmsley came agonizingly close to the 100K world record at Hoka One One’s Project Carbon X 2 event in Arizona

What it will take for Walmsley and Herron to break 100K world records

Many top ultrarunners will be at the Hoka Project Carbon X 2 event, but beating (or even coming close to) the 100K world records will be far from easy

Jim Walmsley, Camille Herron hope to chase 100K records at Project Carbon X 2 event

Forty Hoka One One athletes will line up at two races with their eyes on the 100K world records on January 23