12 HalfRuns members are running this
The Experience
September 19, 2026 – The Full Marathon Returns!
We’re excited to announce that the Full Marathon is coming back in 2026, and will also be part of our. Start planning now for your next Boston Qualifier on this beautiful, fully paved downhill course, no tunnel, no dirt, no BQ time penalty!
There’s no excuse not to do the dam thing!
Marathon
The marathon course begins at Mud Mountain Dam (elevation 1,400′). Runners will follow a fully paved route through picturesque farmlands and forested areas, tracing the path of the Carbon River. The race finishes in front of the historic McMillin Bridge (elevation 200′), with a total net elevation loss of approximately 1,200′.
Half Marathon
The Half Marathon begins in the scenic town of South Prairie (elevation 467′) and follows a gradual downhill route along the paved Foothills Rail Trail. Runners will enjoy a picturesque journey through farmland and forest, winding alongside the Carbon River and finishing in front of the historic McMillin Bridge (elevation 128′). The course features a net elevation loss of 339 feet.
Course Detail
Course Type
Loop
Terrain
road
Difficulty
Flat
Logistics
Registration
Register online
Race Website
Official race information
Race Day
Saturday, September 19, 2026
Historical Weather
☀
Avg High
68°F
☽
Avg Low
48°F
☂
Precip
0.1 in
🍃
Wind
7.4 mph
Avg humidity: 73% · Based on 5-year historical data
Reviews
Marcus Chen
Ran this in 2024 · 1:45:12
“One of the most beautiful races I've ever done. The course is challenging but the views make every hill worth it. Highly recommended!”
