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The Mars Hill Trail runs west from Thorpe Park, climbing Mars Hill and ending where the Tunnel Springs Trail begins. The trail climbs through a steep draw amid an open pine forest. The trail crosses land owned by the Lowell Observatory. Once on top of the hill, you can pick up the Tunnel Springs Trail as well as other trails and forest roads leading to Observatory Mesa. At Thorpe Park, the Mars Hill Trail meets the Karen Cooper Trail (Rio North Trail). All three trails are part of the Flagstaff Urban Trails System, a city-wide network of non-motorized, shared-use pathways.
To access the Mars Hill Trail, you can park at Thorpe Park on Thorpe Road.
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