Near Chelsea, the Potowatame is a difficult 19 mile trail network with plenty of hills. Uphill cranking, downhill shoots, lakes galore, bridges, rocks, roots, washouts, and a killer uphill at the 17 mile mark to waste the best bikers. Maybe the best in Michigan.
To reach mountain biking at the trailhead, follow US 23 to North Territorial and then head west 10 miles to Dexter- Townhall Road. Turn right for 1/2 mile.
Overall, Potowatame is the 22nd most popular mountain bike trail of all 37 mountain biking rides in Michigan.