The New Reality: Women Are Winning Ultras Outright
Women ultramarathon winners are increasingly taking overall victories and record-breaking fastest known times in extreme endurance running, showing that success in multi-day races and 100 mile trail racing now depends more on smart pacing, nutrition, logistics, and mental resilience than on short-distance speed or raw power. This is not a minor shift; it is a rewrite of long‑held assumptions about who thrives when distances stretch into days and terrains turn brutal. Early this summer, Oregon-based runner and PhD engineer Elise Lagerstrom became the first woman in history to win outright one of the Four Deserts Ultramarathon Series races, taking the week-long 250K Gobi March in Mongolia by nearly an hour. In 78 previous editions of these stage races, men had won every single one. That streak is over, and it should change how we talk about performance at the outer edge of human endurance.
A Biennium of the Woman: From Barkley to Cocodona
Lagerstrom’s win is part of what can only be called trail running’s biennium of the woman, a cascade of performances that makes it impossible to treat women’s success as outliers. In September 2024, Tara Dower finished the Appalachian Trail in 40 days, 18 hours, and 6 minutes, beating the men’s record by 13 hours. Then, in early 2025, Jasmin Paris became the first woman ever to finish the Barkley Marathon, a brutal 100-mile-plus ultra so tough that in many years no one finishes before the 60-hour cutoff. This May, Rachel Entrekin not only won the 253.3‑mile Cocodona 250 outright, she destroyed the previous men’s course record by more than two hours and 37 minutes. These results are not about “women’s categories” or age groups; they sit at the top of the overall podium. The message is blunt: when you push into long, chaotic, technical territory, many of the advantages that traditionally favored male elites start to erode.
FKT Summer: Records Fall in Fire and Heat
While women are winning races outright, the parallel story is fastest known times FKT attempts going down left, right, and center—wildfires and heatwaves be damned. Against all odds, this is FKT Summer. François D’Haene overcame extreme heat to become the first sub‑30‑hour finisher of the GR 20, a 112‑mile route along the mountainous spine of Corsica that many consider Europe’s hardest long trail. Aurélien Sanchez pushed through 100‑degree desert conditions to claim the fastest-ever time on the Pacific Crest Trail, only for the trail’s northern section to close 24 hours after his 45‑day effort because of the Ptarmigan Fire. New Zealand’s Sophie Woods then hammered home the point by setting the overall record on the Via Alpina, a 1,647‑mile route through the Alps with more than 475,000 feet of climbing, shattering the previous mark by six days despite two heatwaves and storms. These performances prove that modern extreme endurance running happens in hostile environments, not controlled ones—and athletes, especially women, are learning to thrive there.
Why Women Excel When Distances Turn Extreme
There has long been speculation that women’s better fat‑burning metabolism, higher pain tolerance, and resistance to bonking could offset the testosterone advantage at some ultramarathon distance. The recent wave of women ultramarathon winners suggests we have reached that distance. Elise Lagerstrom’s Gobi March victory came not from a sudden jump in speed but from an engineer’s obsession with optimization and a mountaineer’s ability to suffer. She kept her normal schedule of very long back‑to‑back weekend outings and added longer Fridays when needed. She overhauled her nutrition, filling her pack with foods she knew she could eat for seven days instead of abstract calories, and treated hydration with deliberate care so that every 25‑mile stage fit into the logic of a much longer race. In her words, carrying food your stomach refuses is "a losing battle"—a small but telling example of how women are turning endurance into a thinking sport rather than a brute one.
The Quiet Revolutions: Training, Fueling, and Mental Filing Cabinets
If this feels like a sudden tipping point, it is because training, fueling, and knowledge sharing have quietly transformed extreme endurance running. FKTs have shifted from scrappy, personal projects into professional-level pursuits. Training has improved; online communities, social media, and repeated attempts mean richer beta about lines across fell country, technical ridgelines, and how to pace multi‑week epics like the Pacific Crest Trail and Via Alpina. A fueling revolution and advances in gear, especially shoes, have raised both speed and recovery. Most important, athletes are building what one runner called a “filing cabinet and toolbox” of lived experience, reaching back into those files when new problems appear. Mental resilience is no longer a vague virtue; it is a skill set. Combined with women’s physiological strengths at long duration, this modern toolkit explains why overall records on classic routes and stage races are suddenly within reach—and often falling—to athletes who were once expected to chase, not lead.
