Big Sky Marathon

Prepare for an unparalleled running experience at the Big Sky Marathon in Ennis, Montana, on July 12, 2026. Offering both a full 26.2-mile marathon and a 13.1-mile half marathon, this race is renowned as the "Second Longest Downhill Road Marathon on Planet Earth," boasting an impressive net elevation drop of approximately 3,600 feet. Typical race day conditions in mid-July feature highs around 85°F and lows around 45°F, with a minimal 4% chance of precipitation.

Runners will embark on a breathtaking journey through the untamed beauty of the Beaverhead Deerlodge National Forest, beginning on the Gravelly Range Road at an elevation of over 8,500 feet. The course, primarily gravel and dirt roads with some rocky sections, delivers panoramic mountain views, vast green meadows, and vibrant wildflowers, providing scenery that is consistently rated as exceptional by past participants. While the initial miles offer gradual descents, the route includes a challenging "quad burner" section of steep downhill switchbacks before flattening out towards the Madison River. The finish line for both distances is set against the tranquil backdrop of the Madison River at Varney Bridge, where runners can relish in their accomplishment.

The Big Sky Marathon, part of the Greater Yellowstone Adventure Series and established in 2015, offers a uniquely low-key and supportive atmosphere, a stark contrast to typical city races. Aid stations provide water and hydration approximately every three miles, though runners are encouraged to carry their own bottles as it's a cup-less event. With its stunning natural beauty, significant downhill profile, and proximity to Yellowstone National Park, this "bucket list" race promises an unforgettable adventure for those seeking a challenging yet incredibly rewarding run amidst Montana's majestic wilderness.