Spring - Mud Mountain Dam Marathon & Half Marathon
Spring - Mud Mountain Dam Marathon & Half Marathon logo

Spring - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, Washington, United States
May 30, 2026
Running

About the Event

May 30, 2026 – The Full Marathon Returns!
We’re excited to announce that the Full Marathon is coming back on May 30, 2026, and will also be part of our September event. Start planning now for your next Boston Qualifier on this beautiful, fully paved downhill course, no tunnel, no dirt, no BQ 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.

Join fellow runners on May 30, 2026 for the Spring - Mud Mountain Dam Marathon & Half Marathon. It's a fantastic Marathon, Half-Marathon featuring a flat and fast course in Enumclaw.

Races Offered

Running

Spring - Dam Marathon

May 30, 2026 Marathon 07:00
$135.00
Open

Spring - Dam Half Marathon

May 30, 2026 Half-Marathon 08:15
$125.00
Open

About Enumclaw

Spring - Mud Mountain Dam Marathon & Half Marathon takes place in Enumclaw, Washington, United States. The local timezone is America/Los_Angeles.

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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.

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