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Fall - Mud Mountain Dam Marathon & Half Marathon

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Race date: September 19, 2026.

Key facts

DateSeptember 19, 2026
LocationEnumclaw, Washington, United States
EventsFull Marathon, Half Marathon
Official sourceRegistration and official site

About

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! MarathonThe 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 MarathonThe 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.

Location

Address30525 S.E. Mud Mountain Rd., Enumclaw, WA, 98022

Course

SurfaceTrail

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