Petrified Forest Marathon

The Petrified Forest Marathon is a marathon (26.2 miles / 42.2 km) held on October 20, 2026, in Petrified Forest National Park, near Holbrook, Arizona. The course crosses a unique desert landscape marked by spectacular geological formations and fossilized tree trunks millions of years old.

Runners make their way through a colorful, rocky setting shaped by thousands of years of erosion, in one of the most remarkable geological sites in the American Southwest. Demanding because of the exposure and the arid terrain, the race is aimed at runners used to desert conditions, whether experienced marathoners or those looking for an unusual experience that combines athletic effort with discovering a protected natural heritage site.