Denver’s Sandy Dukat, a former U.S. Paralympic skier and swimmer, has set the world record for above-the-knee amputees in her first official marathon race in Arizona. That’s according to The Denver Post, which notes that Dukat’s time of four hours, 42 minutes, and 18 seconds at the Rock ‘n’ Roll Marathon in Phoenix on Sunday “shattered the previous mark” of 5:27:04 by teammate Sarah Reinersten.

Dukat holds another world record for above-the-knee amputees: the Olympic-distance triathlon. She is also a two-time world triathlon champ and three-time bronze medalist in Paralympic skiing.