Southwest of Joliet near Marseilles, the Cliffs Insane Terrain riding area has 300 acres with 25 miles of trails open to OHV users.
The trailhead is located east of Marseilles past 2400 East Bluff Street (look for the sign).
To reach the park from the Northeast and East (Chicago):
I-55 or I-57 south to I-80 west (Des Moines). I-80 west to Exit 105- Seneca. Turn left (south) at top of off-ramp and go approx. 1 mile to 4-way stop (Rte. 6). Go straight thru and continue on Rte. 6 thru Seneca towards Marseilles. Park is on right side, approx. 2 miles past 4-way stop in Seneca.
Overall, The Cliffs is the 1st most popular OHV & 4wd jeep trail of all 6 OHV routes in Illinois.