(Image Provided by Dirty Dash)

On September 10, the Dirty Dash will return to Missoula. Mud covered 'racers' can run, walk, jog or crawl through this 5K-turned-playground. This year, in honor of its fifth anniversary, The Dirty Dash promises to bring more mud, new obstacles and one-of-kind participant medals.

The Dirty Dash stands by their theory that running is already torture enough, and designed the filthy run to be a fun course for everyone. People of all ages and fitness levels tackle the mud-drenched obstacles at their own pace and have the choice avoid the trickier obstacles altogether.

Online registration for the Dirty Dash - Missoula is now open.