They call it "the toughest race in the Northwest," and Race to Robie Creek organizers aren't just running their mouths. Celebrating its 39th anniversary on April 16, 2016, the half-marathon starts at Fort Boise (elevation: 2,725 feet) and sends racers up Rocky Canyon to Aldape Summit (elevation: 4,797 feet), then onto a 13.1-mile finish at Robie Creek campground (elevation 3,065 feet). "Brutal" is putting it lightly, but a legendary party awaits those who master the course. robiecreek.com

2nd Place: Twilight Criterium, boisetwilightcriterium.com

3rd Place: Dirty Dash, the dirtydash.com