This woman ran 300 miles through the Atacama desert–at 22 weeks pregnant

December 17, 2025

The U.S.’s Allie Gibbons signed up for The Speed Project Atacama before she knew she was pregnant—and decided to keep going.

Allie Gibbons didn’t plan to run 300 miles while pregnant—she had already committed to the race before she found out she was expecting. “I was registered to run Atacama prior to finding out about my pregnancy,” Gibbs told Canadian Running. “While this little girl is the greatest gift in the world, running 300 miles while pregnant was not on my bingo card this year.”

In early December, Gibbons not only completed, but won, The Speed Project Atacama, a roughly 300-mile ultra across Chile’s Atacama Desert, at 22 weeks pregnant. The race includes long stretches at altitude, major temperature swings and minimal structure—conditions that make it one of the more demanding events in ultrarunning. Canadian Running