Registration is open for April 2022!

The Mud Mountain Dam Half Marathon & 5k event is happening April 2nd, 2022. Will you be there?


The Mud Mountain Dam Half Marathon Starts in... 

Marathon. Half. Relay. 5K.

Come run with us!

A Dam Fast Course

1200' elevation loss over 26.2mi

USATF Certified

Marathon Cert. # WA21013RMB Half-Marathon Cert. # WA21012RMB

Enumclaw, Washington State

Help Make it Happen


Volunteer support means everything to us and our runners. We couldn’t do this without the hard work and efforts of dedicated volunteers who provide encouragement and a helping hand from getting our runners ready to hit the start line to fueling them through the finish.