There are some opportunities to utilize off-road vehicles on Federal lands which are outlined at
Recreation.gov. Below is a partial list of the 240 locations on the site where, in some way or another, they allow off highway activities. Be sure to contact the agency that manages the location to find out the current laws and regulations and as always, be sure to follow the Off-Road Code of Ethics.
Agency Creek Campground, Idaho (Bureau of Land Management)
Allegheny National Forest, Pennsylvania (USDA Forest Service)
Alpine Triangle, Colorado (Bureau of Land Management)
Alturas Recreation Area, California (Bureau of Land Management)
Altus Lake, Oklahoma (Bureau of Reclamation)
Anchorage Recreation Sites, Alaska (Bureau of Land Management)
Angeles National Forest, California (USDA Forest Service)
Apache-Sitgreaves National Forest, Arizona (USDA Forest Service)
Arapaho-Roosevelt National Forests-Pawnee National Grassland, Colorado (USDA Forest Service)
Arkansas River, Colorado (Bureau of Land Management)
Ashley National Forest, Utah (USDA Forest Service)
Atchafalaya Basin, Louisiana (US Army Corps of Engineers)
Banks Lake, Washington (Bureau of Reclamation)
Barkley Lake, Kentucky (US Army Corps of Engineers)
Barstow Field Recreation Sites, California (Bureau of Land Management)
Beaverhead-Deerlodge National Forest, Montana (USDA Forest Service)
Bighorn National Forest, Wyoming (USDA Forest Service)
Black Hills National Forest, South Dakota (USDA Forest Service)
Black Rock Desert Recreation Area, Nevada (Bureau of Land Management)
Blm Dunes Ohv Recreation Area, New Mexico (Bureau of Land Management)
Blue Mountain Lake, Arizona (US Army Corps of Engineers)
Boise National Forest, Idaho (USDA Forest Service)
Bonneville Salt Flats, Utah (Bureau of Land Management)
Book Cliffs Recreation Area, Utah (Bureau of Land Management)
Bradshaw Trail, California (Bureau of Land Management)
See the rest of the list here ->
http://www.recreation.gov/recFacilitySearch.do?act... 
