18 mile trail run that has only one Highway 93 crossing. Start/Finish at 55th St & Centennial St. East along the Wellman ditch to S Boulder Creek. Upstream on S Boulder Ck to the S Boulder Ck Trailhead just West of Highway 93. West on Big Bluestem, Mesa and S Shadow Canyon to the junction with Shadow Canyon. Descend by N Shadow Canyon, and Big Bluestem to the S Boulder Ck TH. Distance 17.88 miles, Elevation gain 1358 feet.

Shadow Canyon Loop