Spring - Mud Mountain Dam Marathon & Half Marathon

United States flag Enumclaw, Washington, United States

199 days left

Spring - Mud Mountain Dam Marathon & Half Marathon runsignup.com
Date 29 May, 2027
Races 2 distances
Entry fee $70.00 – $80.00
Runner rating Be the first to rate
Spring - Mud Mountain Dam Marathon & Half Marathon

About the event

Start Planning Now for Your Next Boston Qualifier!
Get ready to do the dam thing!

Take on a beautiful, fully paved downhill course with no tunnel, no dirt, and no BQ downhill penalty.

Full Marathon
The Marathon starts at Mud Mountain Dam, high above the Carbon River at an elevation of approximately 1,400 feet.

From there, runners will follow a fully paved downhill route through picturesque farmland and forest, tracing the scenic Carbon River before finishing at the McMillin Farm Collective at approximately 200 feet.

That's a net elevation loss of about 1,200 feet—a fast, scenic course built for a memorable Boston Qualifier!

Half Marathon
The Half Marathon starts in the scenic town of South Prairie at approximately 467 feet and follows a gradual downhill route along the paved Foothills Rail Trail.

Runners will wind through farmland and forest alongside the Carbon River before finishing at the McMillin Farm Collective, at approximately 128 feet.

The course features a net elevation loss of 339 feet.

A Finish Line Worth Celebrating!
We've got a brand-new finish line just down the road from the McMillin Bridge, and we're making it a destination!

After crossing the finish line, stick around and celebrate with:

Brewhouse
Food trucks
Hot & Cold plunge pools

It's going to be a finish line to remember!

Beautiful course. Fast downhill miles. Fully paved. No tunnel. No dirt. No BQ penalty.

There’s no excuse not to do the dam thing!

Races offered

29May

Spring - Dam Marathon

Running

Distance
42.2K
Start time
07:00
Entry fee
$80.00
29May

Spring - Dam Half Marathon

Running

Distance
21.1K
Start time
08:15
Entry fee
$70.00

Weather history

3-year monthly averages for May in Enumclaw.

Temperature6.6° / 17.2°
Feels like4.0° / 15.2°
Sunshine hours10h 9m
Rainfall2.4 mm
Snowfall—
Wind7.4 km/h (Light breeze)
Humidity74.9%
Max UV indexModerate (4.2)
Sweat lossLow
Course conditionsFirm and slightly soft
Sunrise05:30
Sunset20:37

About Enumclaw

Learn more about the host city, Enumclaw.

Scenic view of

Enumclaw is a city in King County, Washington, United States. The population was 12,543 at the 2020 census.

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