The Centennial Trail and the Mickelson Trail are off-road dream trips for bicyclists. Both are slightly more than 100 miles long and are maintained, mapped and equipped with trail-heads and other amenities.
Five trail-heads provide access to the Centennial Trail in the northern Black Hills.The five trail-heads are the Alkali Creek Trail-head (BLM), Elk Creek Trail-head, Dalton Lake Trail-head, South Boxelder Trail-head, and the Pilot Knob Trail-head. The north portion of the Centennial Trail is approximately 37 miles long, and is open for hiking, backpacking, horseback riding, and mountain biking.
The Mickelson Trail is 109 miles long and runs from Edgemont to Deadwood South Dakota. It contains more than 100 converted railroad bridges and 4 rock tunnels. The trail surface is primarily crushed limestone and gravel. There are 15 trail-heads, all of which offer parking, self-sale trail pass stations, vault toilets, and tables.
Note: Poor to non-existent cell phone coverage on the trail.