In 79 days · Sat, Sep 19, 2026
When
Saturday, September 19th, 2026
Where
30525 S.E. Mud Mountain Rd., Enumclaw WA
Distances
Marathon · Half
About this race
Event Overview
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 Details
- Course Start: The marathon course begins at Mud Mountain Dam (elevation 1,400′).
- Scenic Route: Runners will follow a fully paved route through picturesque farmlands and forested areas, tracing the path of the Carbon River.
- Finish Line: The race finishes in front of the historic McMillin Bridge (elevation 200′).
- Elevation Loss: The race has a total net elevation loss of approximately 1,200′.
Half Marathon Details
- Course Start: The Half Marathon begins in the scenic town of South Prairie (elevation 467′).
- Route Description: The route follows a gradual downhill path along the paved Foothills Rail Trail.
- Scenic Views: Runners will enjoy a picturesque journey through farmland and forest, winding alongside the Carbon River.
- Finish Line: The race ends in front of the historic McMillin Bridge (elevation 128′) with a net elevation loss of 339 feet.
Race Information
For more details, visit the official race page: Fall - Mud Mountain Dam Marathon & Half Marathon.
Course map
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