2026 Diamond City Mountain Relay

Race Information

This is a three day relay race through the mountains of Montana. The teams are from 6-12 people with a set distance each day, from point A to point B. The route is designated and legs are designated. This is almost entirely on mountain dirt roads with support vehicles chasing each runner and dropping runners off at the exchange zones. There are portions of the race that are unsupported single track where the vehicles drive around a mountain that a runner runs over the top of. Each day is around 70 miles (plus or minus) and legs vary from .3 miles to about 13 miles. An average leg is about 4 miles long. It is a very fun and relaxed atmosphere.

👍 Run Pick of the Month: Montana Marathon

📍 Billings, MT - September 20, 2026

💸 SAVE 15% On Entry. Use Code RUNGUIDES15

😄 Why We Like This Run
✅ Big Sky views from a small-town start to an energetic downtown Billings finish
✅ Fast downhill course built for PRs
✅ Multiple race options including marathon, half marathon, 10K, and 5K

Chase a personal best at the Montana Marathon, a fast, scenic point-to-point course that drops over 1,000 feet from the rolling plains into downtown Billings. With wide-open Big Sky views and a Boston Qualifier–certified route, it’s the perfect blend of speed and unforgettable scenery.

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