Watch as Jim Walmsley absolutely charges over ankle-breaking technical terrain to set new 50k course record in desert ultra
Walmsley delivered another resounding victory at the Arizona race

Ultra runner Jim Walmsley delivered another resounding victory at the Mesquite Canyon 50k, shaving more than 20 minutes off the previous record in gruelling desert terrain.
Walmsley, who's expected to run in the Western States in a few month's time, crossed the finish line at the Arizona race in just three hours, 40 minutes and 18 seconds on Saturday. That's an average pace of more than 14 kilometers, or roughly 8.7 miles, per hour.
Compared to the best marathon runners, that might not exactly seem like something to write home about – Harry Styles ran the Japan marathon in less than that last week and he's not even an elite athlete. But a video that was shared to social media, which you can view below, shows how impressive Walmsley's time truy is,
In the clip, which was shared by race organizers Aravaipa Running, a cameraman meets Walmsley in the Ford Canyon section of the race and attempts to keep up with him through extremely technical terrain, and it seems like those Hoka Tecton X 3s are still giving Walmsley magical powers. Looking as fresh as ever, Walmsley tears through desert wash and leaps over boulders at neckbreaking speed, almost like he's running a road race.
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As the video goes on, the cameraman falls further and further behind and soon the sound of him trying to catch his breath drowns out those of Walmsley's shoes hitting the dirt. After less than three minutes, he gives up and lets the 35-year-old athlete charge on to the finish line, where he was met 20 minutes later by econd-placed Eric Lipuma of Vermont.
Growing up in Phoenix, Walmsley seems exceptionally comfortable in desert terrain, and we'll find out in June whether this training run keeps him in good stead to set another record at WSER – he still holds the title after finishing in 14:09:28, set in 2019.
In the women's race, Canada's Ailsa Macdonald also threw down, coming in at the front in 4:46:20, just 11 seconds behind the third-placed man Jesse Carr. She shares on Instagram that the race was meant to be a "little tune up race" ahead of the Canyons 100k next month as she recovers from injury, but even that wasn't enough to keep her from the podium.
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"Running 20 min slower than last year was kinda humbling but I’m not gonna let that play on my confidence too much. There are too many variables to compare one race to another," says Macdonald.
You can view the full race results at Aravaipa Running.
Julia Clarke is a staff writer for Advnture.com and the author of the book Restorative Yoga for Beginners. She loves to explore mountains on foot, bike, skis and belay and then recover on the the yoga mat. Julia graduated with a degree in journalism in 2004 and spent eight years working as a radio presenter in Kansas City, Vermont, Boston and New York City before discovering the joys of the Rocky Mountains. She then detoured west to Colorado and enjoyed 11 years teaching yoga in Vail before returning to her hometown of Glasgow, Scotland in 2020 to focus on family and writing.