South of Bismarck, the Kimball Bottom Recreation Area on Lake Oahe has off-road motorcycle trails riding trails.
To reach the trailhead from the intersection of US 83 and I-94 business in Bismarck head south on US 83 Spur ( SR 1804 / S. 9th Street.) Travel for 5 miles. You will pass the University of Mary. Turn right at a sign for Kimball Bottom Recreation Area. Follow the road 2.7 miles to the ORV area.
Overall, Kimball Bottom ORV Recreation Area is the 1st most popular dirt bike trail of all 3 dirt biking rides in North Dakota.