Hikes›United States›Colorado›Boulder Open Space and Mountain Parks›Flagstaff TrailFlagstaff TrailDay hike · 6.3 km · ↑ 372 mIn Boulder Open Space and Mountain Parks, ColoradoTrip reports and guidesFlagstaff Trailtrailzealot.com · trail guideMore about Flagstaff Trail (1)Running Commentary: Flagstaff Mountainanodynerunning.blogspot.com · Oct 2010 · trip report