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First and Second Flatiron Loop is a 2.5 mile, difficult trail located near Boulder, Colorado, featuring beautiful wildflowers. It is accessible from April to October and suitable for hiking, running, rock climbing and snowshoeing. The trail is located on Boulder's western side where there are five distinct flatirons. Starting at either the Chautauqua or Enchanted Mesa Trailheads, some scrambling is required especially in winter spikes and route-finding experience is needed.
