To celebrate the 50th anniversary of the City of Boulder Open Space program, join us for the Boulder Open Space Trail Challenge. This Trail Challenge consists of hiking all trails that are part of Boulder Open Space, which comprises of 150 miles of trail! Some trails are easy, flat trail walks and some are steep rock scrambles.
This morning, we will do a loop encompassing Shanahan Ridge, but starting from NCAR. The total distance should be about 4.5 miles and the gain, maybe 500'. We'll do roughly this hike, except the spur in and out of Knob Hill Trail.