Jane Maus Reaches the Summit: A New Women’s FKT on the Grand Teton

A new women’s Fastest Known Time has been set on Wyoming’s Grand Teton, an iconic peak that demands both technical climbing skill and incredible endurance. On August 22, La Sportiva athlete Jane Maus completed the round-trip from the valley floor to the 13,775-foot summit in an astonishing 3 hours and 45 minutes, setting a new unsupported women's FKT.

This record-breaking effort on the Grand Teton, a mountain known for its no-fall zones and complex route-finding, required Maus to navigate over 7,000 feet of vertical gain, blending high-speed running with technical scrambling, boulder fields, and fourth-and fifth-class climbing terrain. Her time shattered Jazmine Lowther’s 4:06 FKT, set just three days prior, and Jen Day Denton’s 2022 mark of 4:15. For perspective, this is six minutes faster than the 2012 team time set by mountain running legends Kilian Jornet and Emelie Forsberg.

Her initial approach was one of respect and reconnaissance. “I came out to Wyoming this summer with the intention of running as fast as I could up and down the Grand Teton,” she wrote in an Instagram post. “But having never been on this mountain before, I thought it would be naive to say I was going for the women’s FKT.” After multiple ascents, she gained both confidence and a new appreciation for the mountain's challenges.

When Jazmine Lowther's new record was set on August 19, Maus admitted she questioned the possibility of her own goal. However, with a brief weather window, she pushed forward. "On Friday, August 22, I achieved what I thought was impossible and ran up and down the Grand Teton in 3 hours and 45 minutes," she wrote.

This record caps an incredible season for Maus, who also earned a spot on the U.S. World Mountain Running Team. Despite her achievement, she remains humble and forward-looking. “I am confident the strong women in this sport will bring this time way down,” she said. “I’m just so excited that I get to be part of the story of the Grand Teton.”

Maus’s run is a powerful reminder that breakthroughs in the mountains are born from persistence, respect for the terrain, and the courage to push beyond perceived limits.