Spring Mud Mountain Dam Marathon & Half Marathon

  • Date Sat 30th May 2026
  • Time 7:00AM PDT
  • Location Buckley, Washington
  • Price $77.40 - $88.10
  • Races 2 races
  • Distances Marathon, Half Marathon

Event summary

Get ready for an exhilarating experience at the Spring Mud Mountain Dam Marathon & Half Marathon on Saturday, May 30, 2026, in the charming town of South Prairie, Pierce! This exciting event welcomes runners of all levels to take on a stunning, fully paved course that showcases the breathtaking beauty of the Pacific Northwest.

Runners can choose between the Full Marathon, which starts at the iconic Mud Mountain Dam and boasts an impressive net elevation loss of 1,200 feet, or the Half Marathon, which kicks off in South Prairie and features a gradual downhill journey alongside the picturesque Carbon River. Both races promise an unforgettable experience as participants traverse scenic farmlands and lush forests, culminating at the historic McMillin Bridge. Whether you're aiming for a personal best or just looking to enjoy a fantastic day outdoors, the Spring Mud Mountain Dam Marathon & Half Marathon is the perfect event to kickstart your running season! Don’t miss out on the chance to be a part of this incredible day!

Organiser's Description

May 30, 2026 The Full Marathon Returns!
Were 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.

Theres 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.

Races

  • Dam Marathon

    Incl. $8.10 Fee & T-Shirt

    Sat 30th May 2026 (7:00AM PDT)

    $88.10

    OPENS 01 JAN 26
  • Dam Half Marathon

    Incl. $7.40 Fee & T-Shirt

    Sat 30th May 2026 (9:00AM PDT)

    $77.40

    OPENS 01 JAN 26

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Location

South Prairie Veterans Park, 350 WA-162, Buckley, 98321, WA, United States

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