Pulling race details. Checking the course notes.
Pulling race details. Checking the course notes.

Nearby races · 12
The Big Sky Marathon takes place July 12, 2026, in Ennis, Montana, organized by the Greater Yellowstone Adventure Series. The full marathon starts at approximately 8,500–8,700 feet elevation on the Gravelly Range Road (near Mile 17 of the Madison Marathon route) and descends roughly 3,600 feet to finish at Varney Bridge over the Madison River. The course features three terrain sections: an initial near-flat section through Beaverhead Deerlodge National Forest, a steep switchback descent dropping from 8,500 to 6,000 feet, and a final gradual decline on gravel and pavement to the river finish. A half marathon option starts approximately five miles further down the route and runs 13.1 miles to the same finish. The race includes both full and half marathon distances, allowing participants to run both events over a weekend.
Distances
Distances as listed on a public calendar. Nothing about entry, timing or inclusions is on file.
Getting there
Ennis, MT. Exact start not reported.
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Race-day experiences shared about Big Sky Marathon 2026.
Good to know
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No. Greater Yellowstone Adventure Series runs this race. This page is built from public information on their site. Register and check race-day updates on yellowstoneadventureseries.com .
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