Bighorn Forest Roads and Wyoming’s Season
Bighorn National Forest roads can look inviting on a map while still being snowed in, muddy, gated, or closed to motorized travel. The tricky part is that access changes by route, elevation, weather, and land-management rules—not just by the calendar. This guide explains how to plan a Wyoming ATV or UTV ride in the Bighorns, check seasonal access, and avoid a frustrating turn-around.
How seasonal access works in the Bighorn National Forest
A forest road is not automatically an open riding route
The Bighorn National Forest has a network of roads and trails, but seeing a line on a general map does not mean you can legally ride it. Some routes are open to motorized use only during certain seasons, some are restricted to particular vehicle types, and others may be closed to motor vehicles altogether. A road can also be open to highway-legal traffic without being an authorized route for every off-highway vehicle.
Before setting out, confirm that your intended road is open to your machine and that the access rules apply to the section you plan to ride. This is particularly important near trail junctions, forest boundaries, and areas where a route crosses onto another land manager’s ground. A route that appears continuous on a phone screen may change status when it crosses a boundary.
Treat access information as a route-by-route question, not a blanket answer for the whole forest. The guide to [Wyoming Rules for Riding a National Forest] offers useful context on the rules that apply on national forest ground. For the Bighorns specifically, [Wyoming Trail Closures to Check First] is a helpful companion when you are checking for seasonal or temporary restrictions.
Snow, mud, and elevation shape the riding season
A calendar can help you plan, but conditions in the Bighorns do not change everywhere at once. Higher roads may hold snow well after lower-elevation routes are passable. Spring runoff can leave a road soft or rutted, and a stretch that is dry at one end may still have deep snow, standing water, or a washout farther along. Even later in the riding season, a sudden storm can make exposed or high-elevation travel uncomfortable and difficult.
That is why “open season” and “good riding conditions” are not the same thing. A route may be legally open but still be a poor choice for a low-clearance machine, a novice driver, or a group without recovery gear. Conversely, lower roads may be dry while nearby forest routes remain blocked by snow or a gate.
The broad window described in [Wyoming's April to December Season] is a useful starting point for thinking about the state’s riding calendar, not a promise that a particular Bighorn road will be usable during those months. For a closer look at the region’s spring conditions, see [Bighorn Roads Closed Until June]. It is a good reminder that high-country access can lag behind the dates riders may have in mind.
When Bighorn roads open and close
Plan around the route, not an assumed opening date
There is no single opening day that reliably applies to every Bighorn Forest road. Snowpack, drainage, elevation, road maintenance, wildlife concerns, and local management decisions can all affect when a route becomes available. Some roads may open earlier than nearby routes; others may remain closed until conditions and management needs allow access. Temporary closures can also arise after a storm, during fire restrictions, or because of damage.
If you have a specific trip in mind, check the status of the exact road or trail before you leave. Recheck close to departure, especially if your plans depend on a high pass, a long loop, or a route with no easy alternative. A closure notice posted after you first planned the trip can change the whole day’s route.
It also pays to think through a backup plan before you load the trailer. Pick a lower-elevation option or a legal route closer to your starting point, and be prepared to turn around if you encounter a gate, a closure sign, unsafe conditions, or an unexpected obstruction. [Snowdrifts on a High Forest Road] explores one common reason a route that looks open on paper may not be passable in practice.
Fall closures and changing conditions deserve attention too
Late-season riding can be rewarding, but it comes with its own planning demands. Daylight gets shorter, overnight temperatures drop, and an early storm can bring snow or ice to a road that was dry the day before. Conditions can vary sharply between sheltered timber, open ridgelines, and shaded north-facing slopes. A route that seems manageable in the morning may feel very different after wind, rain, or a temperature drop.
Do not assume that a road remains open simply because it was accessible on a previous visit. Seasonal restrictions may be posted for particular segments, and weather can make travel unsafe even when no formal closure is in place. Look for current signs at the entrance and along the route, and respect closures even when the surface appears rideable.
A practical rule is to leave enough time to finish well before dark and to avoid relying on the final hours of daylight for a return through unfamiliar country. For broader seasonal planning, [Wyoming Riding in Late Autumn] is useful reading. If a planned route is closed, choose an alternative that is clearly authorized rather than trying to bypass a gate or ride around a closure marker.
Maps and route checks before you unload
Use the official motor vehicle map for access decisions
A general road map, navigation app, or GPS track can help you understand where you are, but it may not show the legal status of every route. For motorized access, consult the relevant Motor Vehicle Use Map, commonly called an MVUM, and read its legend carefully. The map helps identify routes designated for motor vehicle use and may indicate seasonal limitations or vehicle restrictions. It is not a guarantee that a road is passable today, so combine it with current closure notices and conditions.
Match the map to your actual machine and planned use. Check whether a route is open to the type of vehicle you are riding, whether restrictions apply to a segment, and where the authorized route ends. If a route crosses from forest land to a county road or another jurisdiction, confirm the rules for the next segment rather than assuming the same permission continues.
A phone-based tool such as onX Offroad can be useful for keeping track of your position, comparing route lines, and planning a backup. Use it alongside official maps and on-the-ground signs, not as a substitute for them. The map-reading basics in [Wyoming Trail Maps and MVUMs] can help you understand how designated routes are shown and why different map layers may not answer the same question.
Check maps against signs, gates, and current notices
Before you ride, make a short checklist: confirm the route is designated for your machine, check seasonal restrictions, look for temporary closure notices, and identify any points where you may need to turn around. Save the map or route information for offline use if you will be outside reliable cell coverage. A screenshot or downloaded map can be more useful than a route that disappears when your phone loses signal.
Once you reach the forest, treat signs and gates as essential information. A sign at a junction may clarify that a route is closed or limited, even if a digital map appears to show it as open. If a sign and a map seem to conflict, do not assume the more convenient interpretation is correct. Stop, avoid entering the questionable section, and seek clarification from the appropriate land manager before continuing.
onX Offroad can help you see where a planned track sits in relation to roads and terrain, but it cannot make a closed route legal or guarantee that a line is passable. Check the map’s data date where available, and verify important access decisions with the land manager. [When a Map and a Sign Disagree] is a useful reference for handling that uncomfortable moment at a junction.
Choosing a starting point and a realistic ride
Buffalo and Sheridan offer different ways into the Bighorns
Buffalo and Sheridan are common starting points for visitors planning to explore the Bighorns, but the route that works best depends on your trip, the road status, and the machine you are bringing. A ride staged from one side of the range may not connect legally or practically to a route on the other side. Mountain roads can be long, and a line that looks close on a regional map may require substantial travel by trailer to reach.
Build the day around a specific access point rather than a vague goal such as “ride the Bighorns.” Identify where you will park, which authorized roads or trails you intend to use, and how far you can travel before fuel, daylight, or weather becomes a concern. If your chosen route is closed, a nearby alternative may be a separate drive away rather than a simple turn at the next junction.
For local planning, see [Riding the Bighorns From Buffalo] and [Riding the Bighorns From Sheridan]. These topics help frame the two communities as distinct starting areas rather than interchangeable trailheads. Use them as planning context, then verify the actual route and access conditions for the day you ride.
Match the route to your vehicle and group
A narrow ATV and a wide side-by-side do not always have the same options. Some forest trails have width limits or other machine restrictions, while a road may be suitable for a wider vehicle if it is designated for that use. Check the route rules before you assume that the whole group can follow the same track. This is especially important when riders bring different machines or are joining a mixed group.
Be realistic about the distance and difficulty your group can handle. A steep, rocky section may be manageable for an experienced driver but stressful for a new rider, a child, or someone operating a heavy machine. Plan shorter loops for mixed-skill groups, agree on a pace, and choose a clear regrouping point before the ride begins. A conservative plan often prevents the end of the day from turning into a rushed push back to the trailer.
Elevation can affect both people and machines. Riders may tire more quickly, and an engine can behave differently in thin air. [Wyoming Riding at Altitude] covers the kinds of adjustments worth considering. If you are deciding between a road and a narrower trail, [Which Wyoming Trails Are Held to 50 Inches] explains why width limits matter and why measuring your machine can prevent a disappointing stop.
Practical preparation for a Bighorn Forest ride
Prepare for a road that changes after you leave the trailhead
A forest road can shift from firm gravel to mud, loose rock, washboard, or snow in a short distance. Before leaving, check tire condition, fuel range, lights, and basic recovery equipment. Carry water, warm layers, food, a first-aid kit, and a way to navigate without cell service. A small repair kit and a plan for handling a flat can make a long walk back less likely if something goes wrong.
Tell someone where you intend to ride and when you expect to return. If the plan changes, share the change when possible. Bring enough fuel for the planned route plus a sensible margin; do not base your range estimate only on an easy road near town. Steep climbs, soft surfaces, cold conditions, and repeated stops can all increase fuel use.
Weather deserves a final check before departure. Mountain conditions can change quickly, and a forecast for a nearby town may not reflect what is happening at elevation. If clouds build, visibility drops, or the road becomes unsafe, turn back. A scenic route is not worth pressing onward when the return could become more difficult than the ride in.
Follow permit and land-use rules throughout the trip
A permit does not give you permission to ride every road. Wyoming’s ORV permit requirements and the land manager’s route designations are separate questions: one concerns whether the machine has the required permit, while the other concerns whether that route is open to that machine. Review [Wyoming ORV Permits Explained] before your trip, and confirm how the rules apply to your vehicle and planned route.
Keep to designated routes and obey posted closures, gates, and seasonal restrictions. Do not widen a trail by riding around a muddy section, cut across open ground to bypass an obstacle, or assume that a route continues beyond a sign. If a road becomes impassable, turn around on the authorized route rather than creating a new one. These choices protect the land and reduce the chance of damaging a route that is already vulnerable from snowmelt or heavy use.
Leave gates as you find them, give livestock and other trail users room, and yield carefully to people on foot, horseback, or bicycle. Pack out trash and avoid disturbing wildlife. A little patience at a narrow road or busy junction makes the experience better for everyone—and helps preserve access for future riders.
| Planning question | What to check | Why it matters |
|---|---|---|
| Is the route open to my machine? | MVUM, route restrictions, and posted signs | A road shown on a map may not be authorized for your vehicle |
| Is it open today? | Current closure notices and recent conditions | Snow, mud, fire restrictions, or damage can affect access |
| Can my whole group ride it? | Width limits, difficulty, and vehicle capability | A mixed group may need a different route or turnaround plan |
| Can I complete the trip safely? | Fuel, daylight, weather, and offline navigation | Remote roads offer fewer easy options if plans change |
| Do I have the required permit? | Wyoming ORV permit rules for your machine and use | A permit requirement is separate from route permission |
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.
