Mesa Falls Marathon

Prepare for an unforgettable journey through Idaho's stunning wilderness at the Mesa Falls Marathon on July 18, 2026. Setting off from the picturesque Targhee National Forest on Scenic Highway 47, this point-to-point marathon and half marathon offers runners spectacular views of the Teton Mountains, the Lower Mesa Falls on the Henry's Fork of the Snake River, and the serene Warm River. The marathon boasts a net downhill course, dropping 882 feet from its 6135-foot starting elevation to the finish line at North Fremont High School in Ashton. Runners will experience a diverse terrain, with the first 14 miles on pavement, followed by 3.2 miles of packed trails along the Warm River, and the remainder on paved roads leading into Ashton. Keep an eye out for local wildlife, as elk, deer, moose, bison, cougars, and even bears are known to frequent this area near Yellowstone National Park.

While generally a fast course due to its descent, the Mesa Falls Marathon presents a memorable challenge with a significant 300-foot uphill climb between miles 17.1 and 19.9. Aid stations, praised by past participants for their abundance of choices, are strategically placed at approximately two-mile intervals from mile 2 onward, ensuring runners are well-supported. The race is renowned for its exceptional organization and small-town charm, consistently earning high marks from runners who appreciate the friendly atmosphere and dedicated volunteers. After conquering the course, celebrate your achievement with a unique finisher's medallion and a refreshing huckleberry milkshake, a beloved tradition of this hidden gem race. Typical race day conditions in mid-July bring comfortable starts with lows around 53°F, warming to highs around 88°F, with a minimal 1% chance of precipitation.