Poughkeepsie Gulch is about the only challenging Jeep trail in the San Juans. There is one major obstacle called "The Wall" that causes the 3.5 rating. There is a bypass that avoids the Wall, and lesser obstacles after it, to make a 2.5 trail.
Bolam Pass runs between US 550 south of Silverton to State Highway 145 north of Rico. It is the next opportunity to do this south of Ophir Pass.
Lime Creek Road lies on the edge of old Ute land, running along Lime Creek from the Upper Animas River Basin to the Bear Creek/Silverton area. It was first used as a hunting trail by the Utes.
Three Basins Trail Jeep will take you into 3 interesting basins a short distance north of Silverton. These basins are easily accessible, but not as well known as many of the larger ones.
Clear Lake is a beautiful alpine lake at 12,000'. Close to Silverton.
Great views and historic structures among alpine tundra up to 12,600' elevation. One of the most complete stamp mills remaining in Colorado
Burns Gulch is a short, easy Jeep trail close to Animas Forks.Nothing really special about the trail, but worth doing if you are in the area.
Alaska Basin is an easy Jeep trail that leaves the Animas Loop just west of Hurricane Pass and drops down into a beautiful basin.
Corkscrew Gulch has to be one of the most beautiful Jeep trails in the area. The eastern end begins high on the side of Cement Creek, goes between the Red Mountains then drops down the side of one of the Red Mountains.
Last Dollar Road is an enjoyable way to get from Telluride to Dallas Divide above Ridgway if you are not in a hurry.
Most of the road is wide and well graded, but there are a few miles in the middle of this Jeep trail that can be bumpy and a bit muddy if it has rained. It can be very dusty when dry!