Forest Fence is a very fun singletrack trail that is mostly mellow grade good quality trail. There are a couple of short steep and loose sections to watch out for. It is a great way to link trails together and having less ride time up Divide road.
Start off of Divide Rd near Dave Wood Rd and head north at the signed singletrack. You are now on South Forest Fence. Continue for about 1.5 miles until you reach Sawdust Pile Rd. Here you can turn left and climb back to Divide Rd. Instead turn right and go about 1/4 mile on the road until you get to another signed trail on the left. This is the continuation, North Forest Fence. A few miles of great singletrack in the aspens gets you to Dented Door Road.
From Dented Door Rd you can head left back to Divide Rd or turn right and follow Dented Door down to the Spring Creek Trail