Off-RoadX Trail Report #3 - Trail App
- Aug 24
- 5 min read
Updated: 6 days ago
Your trail app has satellite imagery, 3D terrain, difficulty ratings, and a comment from TrailDad87 saying the route was open last October.
What it does not have is legal authority.
That bright line on your screen can show where a road exists. It cannot guarantee that you—or your particular vehicle—may drive it today.
We love trail apps. We use them constantly for planning, navigation, scouting, and finding alternate routes. But an app is a navigation tool, not a permission slip.
Before turning onto a trail, you need answers to three different questions:
Does the route exist?
Is my vehicle allowed on it?
Is it open right now?
Those answers may come from three different places.
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WHAT YOUR APP ACTUALLY TELLS YOU
Apps such as onX Offroad and COTREX are excellent planning tools. They can display route lines, land boundaries, technical ratings, photos, user reports, and downloadable maps.
But even COTREX’s own terms explain that showing a road or trail does not mean it is passable, maintained, safe, suitable, or open.
The line might have been imported from an older government dataset. A user report may be months old. A closure may have been issued after you downloaded the map.
Offline access preserves availability—not freshness.
Your screenshot did not become more accurate just because you saved it.
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ON FOREST SERVICE LAND, FIND THE MVUM
For National Forest System roads and trails, the Motor Vehicle Use Map—usually called the MVUM—is the legal record of where public motorized travel is designated.
If a Forest Service route is not shown on the current MVUM as open to your vehicle class, it is not open to public motorized travel.
That remains true even when:
• Your app draws a route through it
• Tire tracks continue ahead
• The gate is open
• No closure sign is visible
• Someone online says they drove it last year
The MVUM can also specify:
• Highway-legal vehicles
• All motor vehicles
• Vehicles 50 inches wide or less
• Motorcycles
• Seasonal dates
• Limited motorized access near a designated route
That distinction matters. A route open to motorcycles or narrow OHVs is not automatically open to a full-size truck, Jeep, or SUV.
And here is the wonderfully inconvenient part: a route designated on the MVUM might not have a sign on the ground. The Forest Service places responsibility on the driver to consult the map.
“No sign said I couldn’t” is not the legal strategy people think it is.
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LEGAL DOES NOT MEAN PASSABLE
The Forest Service also warns that a designated route may still be rough, unmaintained, unsafe, or temporarily impassable.
A road can be legally open and still be a terrible idea.
Washouts, snow, wildfire damage, fallen trees, rockslides, mud, and high water do not wait for a cartographer to update your phone.
So there are really two final questions:
May I drive it?
Should I drive it?
The map helps with the first. Conditions—and judgment—answer the second.
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THE MVUM ISN’T THE FINAL CHECK
An MVUM shows the underlying Forest Service motorized designation. It does not replace current emergency and temporary closure orders.
Wildfire, flooding, road damage, wildlife protection, construction, or resource concerns can temporarily close an otherwise designated route.
This week offers several Colorado examples:
• On August 20, Arapaho and Roosevelt National Forests posted updated motorized recreation impacts in the Williams Fork and East Troublesome burn areas.
• In the East Troublesome area, some routes allow OHVs while prohibiting full-size passenger motor vehicles. “Motorized use allowed” does not always mean your vehicle is allowed.
• An updated Willow Fire closure took effect August 21 on the Leadville Ranger District, affecting National Forest lands, roads, and trails near Turquoise Lake.
• A BLM fire closure in southwest Colorado was issued, reduced, and revised multiple times during July. A saved route could have been accurate one day and wrong the next.
This is why the correct sequence is:
TRAIL APP → CURRENT LEGAL MAP → CURRENT ALERTS AND ORDERS → CONDITIONS
Not:
TRAIL APP → CONFIDENCE → AWKWARD CONVERSATION WITH A RANGER
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ONE ROUTE MAY HAVE SEVERAL LAND MANAGERS
A single outing can cross:
• Forest Service land
• BLM land
• County roads
• State land
• Private property
The Forest Service MVUM governs designated National Forest System routes. It does not grant permission for every road displayed beyond Forest Service jurisdiction.
BLM travel maps, county road information, current agency orders, and private-land permission may also be necessary.
Never assume a mapped connection across private land is public. Unless there is a public right-of-way or you have the owner’s permission, crossing private property to reach public land can still be illegal.
Your app’s colored land-ownership layer is useful. It is not a force field against trespassing.
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THE OPEN-GATE MYTH
An open gate is not proof of public access.
It might be open for livestock, firefighters, permit holders, administrative traffic, logging crews, or a landowner.
Likewise, the absence of a gate does not create a legal motorized route.
Use this rule:
• Posted closure, barricade, or locked gate: stop.
• Current official order conflicts with your app: obey the order.
• Forest Service route absent from the current MVUM: do not drive it.
• Sources disagree or the boundary is unclear: stop and contact the managing office.
Never drive around a closure or create a bypass. Besides risking a citation, that shortcut can damage recovering land and turn a temporary problem into a longer closure for everyone.
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THE OFF-ROADX SEVEN-MINUTE LEGALITY CHECK
Before leaving pavement:
Use your preferred app to plan the route and alternatives.
Record the official road and trail numbers—not merely the app’s nickname.
Identify the land manager for every segment.
Check the current MVUM, BLM travel map, county information, or documented private access.
Confirm that your specific vehicle class is allowed.
Open the managing agency’s alerts and closure-order page the same day.
Download the current legal map, applicable closure maps, and an alternate exit for offline use.
If anything remains ambiguous, call the ranger district or field office before the trip.
It takes less time than trying to win a roadside legal argument with a screenshot.
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THE BOTTOM LINE
Your trail app is a very capable co-driver.
It is not a judge.
Apps tell you where an adventure might be. Official travel maps tell you whether your vehicle is designated to use the route. Current orders tell you whether it is open today. Conditions determine whether proceeding is intelligent.
If the evidence conflicts, follow the most restrictive current official direction and turn around.
The dirt road will still be there another day—and if we respect closures, we have a much better chance of being allowed back on it.
Follow the line.
Verify the law.
Then go have a spectacularly dusty day.
—Off-RoadX
OFFICIAL RESOURCES
USFS Motor Vehicle Use Map FAQ:
Rocky Mountain Region MVUMs:
Stay the Trail Colorado MVUM downloads:
Arapaho and Roosevelt National Forest alerts:
Pike–San Isabel National Forest alerts:
BLM Colorado closures:
COTREX terms:
onX terms of use:
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