The Race Radar

Spring - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, Washington
Spring - Mud Mountain Dam Marathon & Half Marathon official race logo - running event in Enumclaw, Washington
DATE:
TIME:
LOCATION:
Enumclaw, Washington
PRICE:
Free
DISTANCES:
2 Events: 26.2 Miles, 13.1 Miles

About Spring - Mud Mountain Dam Marathon & Half Marathon

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.

Spring - Mud Mountain Dam Marathon & Half MarathonMay 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! 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.
Enumclaw, WA

Race Events & Distances

Choose from 2 race distances available for Spring - Mud Mountain Dam Marathon & Half Marathon in Enumclaw, WA. Registration includes timing, finisher medals, and post-race refreshments.

Spring - Dam Marathon

26.2 Miles
Distance
26.2 Miles
Start Time
Registration Fee
$0.00
https://schema.org/EventScheduledhttps://schema.org/OfflineEventAttendanceMode
Enumclaw, WA
EnumclawWA
Spring - Mud Mountain Dam Marathon & Half Marathon Organizers

Frequently Asked Questions about Spring - Dam Marathon

How long is the Spring - Dam Marathon?
The Spring - Dam Marathon covers 26.2 Miles.
What time does the Spring - Dam Marathon start?
The Spring - Dam Marathon starts at 7:00:00 AM.
How much does it cost to register for the Spring - Dam Marathon?
Registration for the Spring - Dam Marathon costs $0.00.
Where is the Spring - Dam Marathon located?
The Spring - Dam Marathon takes place in Enumclaw, WA.

Spring - Dam Half Marathon

13.1 Miles
Distance
13.1 Miles
Start Time
Registration Fee
$0.00
https://schema.org/EventScheduledhttps://schema.org/OfflineEventAttendanceMode
Enumclaw, WA
EnumclawWA
Spring - Mud Mountain Dam Marathon & Half Marathon Organizers

Frequently Asked Questions about Spring - Dam Half Marathon

How long is the Spring - Dam Half Marathon?
The Spring - Dam Half Marathon covers 13.1 Miles.
What time does the Spring - Dam Half Marathon start?
The Spring - Dam Half Marathon starts at 8:15:00 AM.
How much does it cost to register for the Spring - Dam Half Marathon?
Registration for the Spring - Dam Half Marathon costs $0.00.
Where is the Spring - Dam Half Marathon located?
The Spring - Dam Half Marathon takes place in Enumclaw, WA.

Registration Information

Registration is typically available online until race day (subject to capacity). Early registration is recommended for guaranteed entry and potential early bird pricing. Check with race organizers for specific event details and included amenities.

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