North of Medora through the Little Missouri National Grasslands, the Maah Daah Hey Trail is a well-known 120 mile mountain biking route through the Grasslands connecting the north and south units of the Theodore Roosevelt National Parks. The southern trailhead is located in the Sully Creek State Park south of Medora and the northern trailhead is located at the CCC campground 20 miles south of Watford City off SR85. The Maah Daah Hey Trail is blazed with painted turtle markers. It runs through various badlands surrounded by wide rolling praires. There are several worthwhile side trails, but watch out for getting lost. Keep an eye out for bison, bighorn sheep and feral horses.
For short day rides, the Maah Daah Hey Trail is accessible less than 2 miles west of Medora using the Andrews Creek Loops.
Looking for some after ride action? Try the Iron Horse Saloon in Medora.
Overall, Maah Daah Hey Trail is the 1st most popular mountain bike trail of all 8 mountain biking rides in North Dakota.