How to Read an MVUM to Find Dispersed Camping

The Motor Vehicle Use Map (MVUM) is the U.S. Forest Service’s authoritative record of which roads and trails in a National Forest are legally open to motorized vehicles, and it is the single most important document for anyone planning dispersed camping on National Forest land. An MVUM answers three questions at a glance: whether a route is open to your class of vehicle, what seasonal dates apply, and what kind of access the road allows. Reading one correctly keeps you on legal ground, because a route that does not appear on the current MVUM is closed to motorized use no matter how established it looks on satellite imagery or in a trip report, and camping off-route is permitted only when you reach the site by a designated road. This guide explains every symbol and notation you will encounter on any MVUM: the solid and dashed lines that separate roads from trails, the vehicle-class columns, the seasonal-date annotations, and the width and surface notes that hint at road condition. It also shows how to read those markings against your vehicle’s clearance and drivetrain before you commit to a forest road, so the map becomes a planning tool rather than a legal formality. New to camping outside a designated campground altogether? Start with What Is Boondocking.

What Is an MVUM and Why Does It Matter?

MVUMs are published under 36 CFR 212 Subpart B, which requires every National Forest to designate the roads, trails, and areas open to motor vehicle use. A route that appears on the MVUM is legally open. A route that does not appear, regardless of how well-traveled it looks on satellite imagery, is closed to motorized use. Camping off-route in a National Forest is allowed, but you must reach your site via a designated route.

Each of the 154 National Forests publishes its own MVUMs, updated when travel-management plans are revised (typically every three to five years). Always download the current PDF from the forest’s official page rather than relying on a cached copy.

“Designated roads, trails, and areas are those that are specifically identified as open to motor vehicle use … Any motorized travel off the designated system of roads, trails, and areas is prohibited.”

U.S. Forest Service. Off-Highway Vehicle Program (Travel Management Rule)

How Do You Download the Right MVUM for Your Forest?

Each National Forest hosts its MVUM as a PDF on its Forest website. Go to fs.usda.gov/visit/maps, select the forest (for example, Pike-San Isabel NF in Colorado, Ouachita NF in Arkansas, or Willamette NF in Oregon), and look for the Motor Vehicle Use Map download link. Most forests also post district-level maps that cover a smaller area at a larger scale. Useful for detailed route planning.

You can also use the Forest Service interactive visitor map to view designated routes overlaid on a satellite basemap. This is helpful for identifying camp spots but always cross-reference with the official PDF before driving a remote road.

What Do the Road and Trail Symbols on an MVUM Mean?

MVUMs use a standardized symbol set across all forests. The legend printed on every map explains each symbol; here are the ones that matter most for dispersed camping:

How Do You Read the Route Table and Surface Type?

Each MVUM includes a route table that lists every designated road and trail by number, surface type, allowed vehicle class, and seasonal open dates. The surface type codes vary slightly by forest, but the common ones are:

• P (Paved): year-round unless otherwise noted. Passenger car accessible.
• A (Aggregate/gravel): usually passenger car accessible in dry conditions. Check clearance after rain or snow.
• N (Native/unimproved): dirt surface. High clearance recommended. Can become impassable when wet.
• H (High clearance): explicitly marked as requiring high clearance. 4WD may be needed in wet conditions.

These codes describe the road, not your specific vehicle. See what high clearance vs 4×4 required actually means for your rig to translate a surface code into a real go/no-go decision before you leave pavement.

Cross-referencing the route number on the map with its row in the route table tells you the full picture: surface, allowed vehicles, and the exact months it is open. This is where you catch the cases where a road looks driveable on the map but is only open July 1 to November 15.

How Do You Find Legal Dispersed Camping Along an MVUM Route?

A pull-off along a designated road is a potential dispersed site unless one of the forest’s own orders closes the area. The forest’s orders also set how long you may stay and how far from water you must camp: 36 CFR 261.58 lists acts a forest may prohibit by order, such as camping longer than the order allows, and sets no number of days or feet itself. Key steps:

1. Identify an MVUM-designated road in your target area that is open in your travel window and accessible to your vehicle type.
2. Find the forest’s stay-limit order on its alerts page. A 14-day limit in a 30-day period is common, but some forests set a different number of days or a different move-on distance.
3. On-site: keep the distance from water the forest publishes (in Colorado alone, forests publish 100, 150 or 200 feet) and stay out of posted closure areas.
4. Check current fire restrictions on the forest’s own alerts page before starting any campfire. Each Forest Service region publishes its own index (for example, fs.usda.gov/r02/alerts covers the Rocky Mountain Region).

These four steps cover the National Forest side of the picture. If you are also weighing BLM land, see how BLM and National Forest dispersed camping rules compare, and for the full stay-limit and setback picture forest by forest, see our dispersed camping rules by National Forest guide.

Worked Example: Which Colorado National Forests Have the Most Accessible Dispersed Camping?

Colorado is a useful worked example because its terrain variation is extreme, so the MVUM route table does more work there than almost anywhere else. Colorado’s Grand Mesa, Uncompahgre, and Gunnison National Forests (GMUG) have an extensive network of passenger car accessible dispersed sites off their graded forest roads. The White River NF (Vail/Aspen/Glenwood area) has significant dispersed camping but much of it requires high clearance vehicles. The San Juan NF (Durango area) mixes accessible and 4×4-only terrain. The same reading method applies on any forest: match the route number to its table row, check the surface code against your vehicle, then confirm the seasonal window.

The Camprtron dataset covers reviewed sites across National Forest, BLM, and state land in 50 states across the Mountain West, New England, Texas, the Pacific Northwest, California, the Great Plains, the Mid-Atlantic North, the Northwoods, the Ozarks, Appalachia North, Appalachia South, the Gulf South, the Ohio Valley, Alaska, and Hawaii, with access type rated per site based on MVUM surface codes and PostGIS spatial analysis — see the Colorado access road analysis for how that rating breaks down road by road. You can use the app to filter by vehicle capability before consulting the MVUM for the specific route.