Trent Nelson | The Salt Lake Tribune Runners slip down a slide at the Dirty Dash, held at Soldier Hollow, Saturday June 6, 2015.Trent Nelson | The Salt Lake Tribune Runners get dirty at the Dirty Dash, held at Soldier Hollow, Saturday June 6, 2015.Trent Nelson | The Salt Lake Tribune Runners get dirty near the finish line at the Dirty Dash, held at Soldier Hollow, Saturday June 6, 2015.