Spring - Mud Mountain Dam Marathon & Half Marathon
Spring - Mud Mountain Dam Marathon & Half Marathon is a running race on May 29, 2027 in Enumclaw, WA, with entry fees from $70 to $80.
- Date
- May 29, 2027 (242 days to go)
- Price
- $70–$80
- Sport
- Running
From the Organizer
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!
Events
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
67°
Typical Low
46°
Chance of Rain
46%
Based on US Climate Normals data from Buckley 1 Ne, 7 mi from the venue.
About Enumclaw, WA
City Elevation
558 ft
Nearest Airport
SEA
Seattle–Tacoma International Airport · 18 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Approximate location — pin shows the host city, not the exact venue.
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Spring - Mud Mountain Dam Marathon & Half Marathon, put it on the calendar, and turn “someday” into a start date.
242
Days to train
- Race
- Spring - Mud Mountain Dam Marathon & Half Marathon
- Date
- May 29, 2027
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About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
More Running races near Enumclaw, WA
Frequently Asked Questions
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Spring - Mud Mountain Dam Marathon & Half Marathon
May 29, 2027