Wyoming Trail Maps and MVUMs
Wyoming’s riding maps can be confusing: a route may appear on a navigation app yet still be closed to motor vehicles, limited to certain machines, or open only part of the year. This guide explains how to read Forest Service MVUMs and other public-land maps, check route restrictions, and plan an ATV or UTV ride without mistaking a visible road for an open one.
What a Wyoming MVUM Tells You
MVUM means Motor Vehicle Use Map
A Motor Vehicle Use Map, usually called an MVUM, is an official Forest Service map showing which roads and trails are designated for motor vehicle use on a particular national forest or ranger district. It can also show restrictions such as vehicle width, seasonal dates, and designated areas for off-road travel.
For a rider, the most important point is that an MVUM is not simply a map of everything that exists on the ground. A two-track may be visible in satellite imagery, on a recreation map, or in a navigation app without being designated for public motorized use. The MVUM helps answer the more specific question: Is motor vehicle use allowed here, and under what conditions?
Wyoming riders may encounter Forest Service maps while planning trips in places such as the Medicine Bow-Routt, Bighorn, Bridger-Teton, and Shoshone national forests. Each forest or district can have its own map and route details, so finding one MVUM does not necessarily answer questions about another area. Start with the map for the unit where you plan to ride.
It is a legal-use map, not a complete trip-planning guide
An MVUM is designed to show motorized-use designations, not to provide every detail a rider might want for a comfortable day out. It may not tell you whether a trail is muddy, rutted, washed out, crowded, or difficult for a stock machine. It may not show every useful landmark, fuel stop, scenic overlook, or place to get water.
That distinction matters when the route looks easy on paper. A narrow road shown as open could still have steep grades, loose rock, tight turns, or a surface that changes after rain. A UTV driver planning for passengers may need more information than the legal map provides, while an ATV rider may want to know whether a route is suitable for a smaller machine.
Use the MVUM to confirm whether a route is designated for motor vehicles, then use other reliable resources to plan the ride itself. A Forest Service district map, an agency page, a visitor center, or a navigation tool such as onX Offroad can help with orientation and route planning. Treat those extra resources as supporting information, not as a substitute for the official use designation. For a broader look at access rules, see [Wyoming Rules for Riding a National Forest].
The map applies to a specific place and time
A map’s coverage matters. A Forest Service MVUM applies to the national forest or district identified on the map; it does not automatically establish access on nearby Bureau of Land Management, state, county, or private land. A long ride may cross several types of ownership, and each part of the route may be governed by a different map or set of restrictions.
Timing matters too. Some routes have seasonal closures, and road access can also be affected by temporary conditions such as fire restrictions, maintenance, or local closures. Even when a map shows a route as designated, a gate, closure notice, or posted sign can indicate that it is not open for your planned trip.
Before leaving, confirm that you have the correct map for the area and check for current notices from the land manager. This is especially important when a route crosses from one management unit to another or when a trip depends on a seasonal opening. If you are unsure who manages a road, identify the land boundary before assuming that one agency’s map covers the entire route.
How to Read Routes and Restrictions
Find the map legend before following the lines
Map lines can be easy to misread when you are looking at a screen full of roads, trails, boundaries, and labels. Start with the legend. It explains how the map distinguishes designated routes, closed routes, vehicle restrictions, and other features. A route’s color or line style may mean something different on one map series than on another, so do not rely on a symbol you remember from a different forest.
Look for notes that explain the map’s scope and the symbols used. Check the name of the forest or district, any date or revision information, and the legend before tracing your route. If a route is shown with a vehicle restriction, find out what that restriction means rather than interpreting it from the line alone.
A useful habit is to follow the route from beginning to end on the official map. Confirm that it connects to another designated route where you expect it to, and check for a closure or restriction at junctions. A line that appears to continue on a general navigation map may end at a boundary or connect to a segment with different rules on the MVUM.
Check vehicle width and other machine limits
Not every route is suitable or open to every vehicle. Some maps identify routes by vehicle class or width, which can matter for a wide side-by-side. A trail that is open to narrower machines may not be open to a UTV that exceeds the posted or mapped limit. Do not assume that a route is suitable just because a machine can physically fit through a gate or between trees.
Compare the restrictions with the machine you actually plan to ride. Measure the vehicle’s width in the way the relevant agency specifies, and account for accessories that make it wider, such as mirrors, racks, or added equipment. When a route is marked for a particular width class, do not rely on a rough visual estimate from a map screenshot.
Restrictions can also apply to the type of vehicle, the season, or the location of travel. Some maps distinguish between roads and trails, while others identify designated riding areas separately. If you ride a mix of machines, check every route against the least permissive limitation that applies to your group. For more detail on map limits and machine fit, see [Which Wyoming Trails Are Held to 50 Inches] and [Measuring Your Machine Tire to Tire].
Treat seasonal dates and on-the-ground signs seriously
A route can be designated for motor vehicle use and still be closed during a particular season. This can protect wildlife habitat, reduce damage when soil is wet, or address other management needs. A date range printed on a map is not a suggestion to be weighed against the weather; it is a restriction to follow.
Closures can also change for reasons that are not fully reflected in a map you downloaded earlier. A road may be temporarily closed for repair, fire conditions, wildlife protection, or another management decision. At a trailhead or junction, look for posted notices and barriers. If an official sign says the route is closed, do not treat an older map or a phone track as permission to continue.
Before riding, check the land manager’s current alerts and notices for the area. On the trail, obey signs and gates even if they do not match what you expected from your route plan. If the map and a posted sign appear to conflict, stop and seek clarification from the responsible agency rather than riding through and sorting it out later. These checks are especially worthwhile in spring and late autumn, when snow, mud, and seasonal restrictions can affect access. Related seasonal planning topics include [Wyoming Trail Closures to Check First] and [Who Decides When a Wyoming Trail Reopens].
Using MVUMs With Other Wyoming Maps
Forest Service maps are only one layer of the picture
An MVUM is essential for checking motorized access on Forest Service land, but Wyoming riding plans often involve more than one land manager. BLM land, state trust land, county roads, state-managed areas, and private parcels may appear close together on a map. Each can have its own rules, closures, and access requirements.
That is why a route that looks continuous on a general map may not be continuous as a legal riding route. A road can cross from national forest land onto private property, or from one public-land agency’s area into another’s. The fact that one segment is open does not establish that the next segment is open too.
Use a map that shows land boundaries and confirm the route with the agency responsible for each segment. A broad overview such as [Wyoming's Enrolled Roads and Trails] can help riders understand designated access, while the relevant land manager’s own map or notice provides the detail needed for a particular road. For additional context on the separate systems, see [Wyoming Rules for Riding BLM Land].
Use digital maps as a planning aid
Digital maps can make it easier to see where a route goes, compare alternatives, and keep track of your location. A tool such as onX Offroad may be useful for exploring a proposed ride and viewing mapped information in one place. Still, a screen display should not be treated as automatic proof that a route is open to your machine.
The problem is not that digital maps are useless; it is that different map layers may serve different purposes. A layer might show a road’s physical location without establishing public motorized access. A recorded track might show where another rider traveled, not whether that rider had permission or was following current restrictions. Before relying on any route, compare it with the relevant official map and current agency notices.
If you use onX Offroad or another navigation app, check how the map represents ownership, route status, and restrictions. If you plan to ride beyond cell coverage, learn how to access your maps offline before leaving. A phone battery can drain quickly in cold weather or during long navigation sessions, so carry a backup power source and a paper map when practical. The app should support good planning, not replace it.
Carry a map you can still use when technology fails
A phone can be a valuable navigation tool, but remote riding brings ordinary problems: weak reception, a dead battery, glare, dust, rain, or a device that takes a hard knock. Downloading or saving the information you need before departure can help, but it is wise to have a backup that does not depend on a signal.
A printed MVUM is useful because it preserves the official route designation and legend in a format you can consult at a junction. Fold it so the section you need is easy to reach, and keep it somewhere protected from water and grit. If the map is large, mark your planned route before the ride, while still leaving enough detail visible to recognize nearby alternatives and boundaries.
A backup map does not eliminate the need to check current conditions. It gives you a practical reference if your phone stops working or your group becomes separated. Tell someone where you expect to ride and when you plan to return, especially if your route goes far from towns or cell service. For more preparation ideas, see [Carrying a Travel Management Map in Wyoming] and [Wyoming Trail Maps and MVUMs].
A Practical Route-Checking Routine
Before the trip, identify every land manager
Start by choosing the general riding area, then identify the agencies responsible for the route. A ride near Casper, for example, may involve different access information from a route in the Snowy Range or the Bighorns. Do not select a route simply because it appears near a familiar town or recreation area; confirm which land manager controls the ground you intend to cross.
Next, locate the appropriate official map for each management area. For a Forest Service route, use the MVUM for the correct forest or district. For other public land, find the relevant agency’s travel or recreation map. If the route crosses private property or state trust land, confirm whether public access is allowed and whether a separate permit or permission is required.
Then check for current notices. Look for closures, seasonal restrictions, fire-related changes, and route-specific warnings. This step can save a long drive and a frustrating turnaround at a gate. It also helps avoid the uncomfortable situation of discovering halfway through a ride that the route you planned is not available.
Trace the route and prepare a backup
Once you have the maps, trace the route segment by segment. Confirm the starting point, junctions, vehicle restrictions, and where the route ends or changes designation. If you are planning a loop, verify that every connecting segment is open; a loop that depends on one closed road is not a workable loop.
Choose a backup route that stays within confirmed open areas. A simple alternative can be useful if a road is muddy, a gate is closed, a storm moves in, or a machine has a mechanical problem. Keep the backup realistic for your group’s fuel range, riding ability, and available daylight. A short detour on a map may turn into a long ride over rough terrain.
Share the plan with everyone in the group before starting. Make sure each rider knows the intended route, any restrictions, and what to do if the group gets separated. A UTV group may travel at a different pace from a group of ATVs, so agree on meeting points and avoid assuming that everyone can easily keep up on unfamiliar terrain.
At the trailhead and on the ride, reassess
At the trailhead, read posted information before unloading or heading out. Confirm that the route name and direction match your plan, and note any warnings or closures. If the trailhead notice contradicts an older map, do not ignore it just because you drove a long way to get there.
As you ride, watch for junction signs, gates, and changes in the route. If a sign is missing or a route becomes unclear, stop at a safe location and check your map rather than continuing on a guess. Do not use fresh tire tracks as proof that a route is open; another rider’s decision does not establish legal access.
Conditions can change quickly in Wyoming. A dry road near town may become slick at elevation, and a route that looked manageable in the morning can feel different after rain or snow. Be willing to turn around. A planned ride is not worth damaging a trail, getting stranded, or riding into an area that is closed. For practical preparation and route etiquette, see [Wyoming Trail Etiquette With Ranchers] and [Wyoming Riding at Altitude].
Common Map-Reading Mistakes to Avoid
Assuming a visible road is open
A mapped road, a satellite image, and a line on an MVUM do not all mean the same thing. A road may be physically visible but not designated for motor vehicle use. It may also be closed to the public, restricted to certain machines, or located on land where access requires permission.
This is one of the easiest mistakes to make when a route looks like a convenient connector between two public areas. Before riding it, verify the ownership and designation of that exact segment. If access is unclear, contact the responsible land manager or choose a route that is clearly designated.
Do not assume that a route is open because it appears in an app, because another rider posted a track, or because the entrance has no gate. Maps are planning tools, but the land manager’s rules determine where public motorized travel is allowed.
Treating a route line as a condition report
An MVUM may tell you that a route is designated for use, but it is not a guarantee that the surface is in good condition. Wyoming roads and trails can be affected by snow, rain, erosion, washouts, construction, or seasonal maintenance. A legal route can still be too difficult for a particular rider or machine on a particular day.
Check for recent condition information when available, and be honest about your group’s experience. A beginner on a small quad may need a different route than an experienced driver in a well-equipped UTV. If the route has steep slopes, loose rock, water crossings, or high-altitude exposure, factor those conditions into the plan rather than relying on a line on a map.
When conditions are uncertain, choose a conservative route and keep a turnaround option. That is not wasted planning; it is how you keep a fun ride from becoming a recovery problem.
Carrying only a screenshot or relying on memory
A screenshot can be helpful, but it may omit the legend, map boundary, or details needed to interpret a route. A cropped image can also make a road look as if it continues into an area where a different map or restriction applies. Save the full map or carry a complete printed copy.
Likewise, do not assume you will remember a route you reviewed days earlier. Junctions can look similar, and a small wrong turn can take you onto a road with a different status. Keep the map accessible and check it at decision points rather than waiting until the group is uncertain.
A little preparation makes map use much less stressful. Verify the map’s area and legend, check current notices, plan a backup, and carry a reliable way to navigate. With those habits, Wyoming’s MVUMs and recreation maps become tools for making better ride decisions—not just paperwork to glance at before loading the trailer.
Disclaimer
This article is for general informational purposes only and does not constitute professional advice. Laws, prices and regulations vary by location and change over time. Consult a qualified professional for guidance on your specific situation.
