Snowmobile trails are groomed by volunteers and snowmobile enthusiasts of the CENTRAL OREGON SNOWBUSTERS and the Sisters Sno-Go-Fers.  These organizations operate under a special use permit from the Bend/Fort Rock Ranger District and the Sisters Ranger District of the Deschutes National Forest.  Volunteers use Oregon State Snowmobile Association Equipment purchased with funds from gas tax and registration fees from ATVs and Snowmobiles.  Trails are groomed six days a week (Sunday through Friday).  To enlarge and print one of the trail maps below, click on the map.  Groomed trails appear in "white".