Wide Side-by-Sides on Narrow Mountain Trails
A full-size side-by-side can feel perfectly manageable in a wide staging area, then suddenly seem enormous when a Colorado trail narrows between trees, rocks, or a steep drop. This guide explains how to assess width before you go, choose suitable routes, handle tight sections, and avoid getting committed to a trail your machine cannot safely navigate.
Why machine width matters on Colorado mountain trails
Width affects more than whether you can squeeze through
A side-by-side’s advertised width is only one part of the picture. On a tight trail, the tires, bodywork, mirrors, roll cage, and any added accessories all influence how much room you need. A machine may fit between two obstacles on paper but still leave little margin for steering corrections, suspension movement, or an uneven edge.
That margin matters in Colorado’s varied terrain. A narrow forest track near Taylor Park may have trees close to the route, while a rocky shelf road in the San Juan Mountains can combine a tight line with exposure. On either kind of trail, an outside tire can drop into a rut or slide toward a bank even when the body clears the obstacle. A trail that seems wide enough in a photograph may feel quite different when you are seated in the driver’s seat.
Width also influences how easily you can meet another vehicle. Some routes have limited places to pull aside, and a full-size UTV may need more room to stop, reposition, and let an oncoming rider pass. If there is no safe turnout nearby, both drivers may have to reverse carefully to reach one. This is one reason it helps to consider not only the trail’s narrowest point but also how frequently the route offers room to yield.
The posted or mapped width is not the whole story
A route’s width designation can help you screen options, but it should not be treated as a promise that every section will feel roomy. Trees can grow into a route, rocks can shift, and erosion can make a previously comfortable section narrower. Seasonal snow, mud, or deep ruts can also reduce the space available to place your tires safely.
It is useful to distinguish a route that is legally open to a certain machine class from one that is comfortable for that machine. Official maps and signs can help establish where motorized travel is allowed and whether a route has a width restriction. They cannot tell you exactly how confident you will feel beside a steep edge, how much clearance your accessories require, or whether a recent storm changed the trail surface.
For a more complete overview of how route classifications and trail ratings fit together, see [Colorado Trail Difficulty Ratings and What They Mean]. If you are comparing a full-size UTV with a narrower machine, [Colorado Trails Rated for Full-Size Vehicles] is another useful topic to review before choosing a destination.
How to check whether a route fits your UTV
Measure your machine as you actually ride it
Start with your machine’s manufacturer-listed width, then think through anything that changes its real-world footprint. Aftermarket wheels, wider tires, wheel spacers, doors, mirrors, bumpers, and cargo mounted along the sides can all affect how the UTV fits through a tight gap. Even if an accessory does not increase the vehicle’s official width, it may make it harder to judge clearance from the driver’s seat.
Measure at the widest point, including accessories that could contact a tree or rock. If your machine has removable mirrors or other detachable equipment, decide whether you would genuinely remove it before the ride and whether doing so is appropriate for the route. Do not rely on folding mirrors as a substitute for safe clearance; the cage, tires, and body still need room.
Then compare that measurement with the route information available to you. The most useful comparison is not just “machine width versus listed route width,” but “machine width plus a practical safety margin versus the narrowest likely passage.” A very tight fit leaves little room for steering error or changing trail conditions. If you cannot find reliable width information, treat uncertainty as a reason to choose a more suitable route rather than an invitation to test the gap in person.
Use official maps and current local information together
A Motor Vehicle Use Map, often called an MVUM, is an important starting point for understanding which routes are open to motorized travel and what restrictions apply. Read the map legend and route details carefully; do not assume that every line shown is open to every type or size of OHV. [Reading a Colorado Motor Vehicle Use Map] explains how to interpret the information, while [Downloading a Motor Vehicle Use Map] covers the practical step of keeping the map available for your trip.
Map information works best when paired with current local conditions. Before leaving, check the land manager’s notices for seasonal closures, maintenance, fire restrictions, or route changes. If you are riding in a trail town, a local visitor center, ranger office, or reputable riding business may be able to point you toward current notices, but ask specifically about machine width and the exact route you plan to ride. A general recommendation such as “the pass is open” does not necessarily answer whether a wide side-by-side is a comfortable fit.
Tools such as onX Offroad can help riders plan and keep track of routes, especially when cell service is unreliable. Use it as a planning aid alongside official maps and posted signs, not as permission to ride a route that is closed or restricted. Download the information you need before entering a dead zone, and carry a map or another backup you can consult if your phone loses power or reception.
| What to check | Why it matters | A practical next step |
|---|---|---|
| Machine width and accessories | The widest part may be wider than the basic vehicle specification | Measure the machine in its actual riding setup |
| Route restrictions | A route may not be open to every machine type or size | Read the current official map and its legend |
| Trail condition | Erosion, snow, mud, or maintenance can change usable space | Check current land-manager notices |
| Turnouts and passing space | A narrow route may require reversing to a safe pullout | Identify likely places to yield before setting out |
| Driver comfort and experience | A legal route may still feel too exposed or tight | Choose a less demanding route when uncertain |
Choosing routes that suit a wide side-by-side
Start with the route, not the destination photo
A dramatic photograph of a high pass or alpine basin can make a route look inviting, but it rarely shows the tightest turns, the narrowest tree sections, or how much room is available to pass another vehicle. Choose a route based on its official restrictions, surface, exposure, and fit for your machine—not just its reputation or scenery.
When planning around popular areas such as Taylor Park, the Grand Mesa, or the Alpine Loop, remember that a destination can include a network of routes with very different characteristics. One route may suit a wider machine while a nearby trail is narrower or more technical. Do not assume that because a side-by-side is common in the area, every route in that area is appropriate for your vehicle.
A narrower route can be a better choice even if it means skipping a famous viewpoint or shortening the day. It is more enjoyable to finish a comfortable loop and still have time to explore a town than to spend hours worrying about whether the body will clear the next tree. If your group includes machines of different sizes, plan around the widest vehicle and the least experienced driver, not the most capable machine in the group.
Match route width with terrain and exposure
Width is only one factor in route difficulty. A broad road can still be challenging if it has loose rock, steep grades, sharp switchbacks, or a long descent. Conversely, a narrow route may be manageable for a skilled driver if it is stable, slow-paced, and free of exposure—but that does not make it a good choice for every vehicle or rider.
Consider the type of obstacle that would make you uncomfortable. Is it a narrow gap between trees, a tight turn around a rock, a side slope where the downhill tire has little margin, or an exposed shelf? Those details matter because different drivers and machines handle them differently. A long wheelbase may require more room to turn around a switchback. A wide stance may make a side slope feel more demanding. A vehicle with limited visibility at the front corners may be harder to position precisely.
If you want a machine-size comparison before choosing your riding area, review [Trails That Suit a 50-Inch Machine] alongside the route information for your destination. It can help clarify the difference between routes intended for narrower vehicles and options that may be more suitable for a full-size side-by-side. Still, confirm the specific route’s current restrictions rather than using a general trail category as a substitute.
Driving a wide UTV through narrow sections
Approach obstacles slowly and deliberately
When the trail tightens, reduce speed before reaching the pinch point. Stopping to look is usually safer than trying to judge clearance while moving. If a passenger is available, have them get out and guide you from a position where they are visible and safely away from the vehicle’s path. Agree on simple hand signals before the ride so you are not trying to interpret instructions while maneuvering.
Look beyond the immediate obstacle. A gap may be wide enough at the front but narrow near the rear tires, or a turn may require the back of the machine to swing toward a tree. Check where all four tires will travel, not just where the nose is pointing. On uneven terrain, remember that suspension movement can change how close the vehicle comes to an obstacle.
If you are not confident the UTV will fit, do not force it through. Stop in a safe place, assess whether there is room to turn around, and consider reversing to a wider area. Reversing on a steep or exposed section may carry its own risks, so avoid making a rushed decision at the obstacle. If the route continues to narrow and there is no safe place to turn or pass, the better choice is to retreat while you still have room.
Pass other users only where there is room
A narrow mountain trail is not the place to hurry through a blind corner because another vehicle might be nearby. Keep your speed low enough to stop within the clear distance you can see. On a route where encounters are possible, pay attention to dust, engine noise, voices, and signs of traffic ahead. If you meet another rider in a tight section, discuss who can reach a safe pullout rather than trying to squeeze past at the edge.
When reversing to a turnout, move slowly and use a spotter if the driver cannot see the rear clearly. The spotter should stand where they are protected from the vehicle and can communicate without stepping between the UTV and an obstacle. If there is no safe turnout in either direction, do not let social pressure push you into an unstable maneuver. Take the time to identify the safest position for both vehicles.
Be especially patient with other users who may be on foot, horseback, bicycle, or in a smaller off-highway vehicle. A wide side-by-side can feel imposing on a narrow trail, and dust can reduce visibility for everyone behind it. Slow down well before meeting others, follow posted rules, and give them room to move through the section without being crowded.
Planning a safer ride and knowing when to turn around
Prepare for remote conditions before leaving
Colorado mountain routes can take you beyond reliable cell service, particularly in remote sections of the San Juan Mountains and other high-country areas. Save maps and route notes before driving to the trailhead. Tell someone where you plan to ride and when you expect to return. If your route changes, update your contact when you have a reliable connection rather than assuming you will be able to send a message from the trail.
Check the forecast and expected trail conditions, and be prepared for a change in weather. Rain can make dirt and rock slick; snow can hide the edge of a rut or reduce usable width. Afternoon storms can bring lightning, hail, or poor visibility, especially at higher elevations. Bring the basic supplies you would want if a delay meant spending longer on the trail than planned, including water, warm layers, and a way to navigate without cell coverage.
Your group’s pace should leave room for the unexpected. A mechanical issue, a blocked section, or a long wait for oncoming traffic can change the day’s schedule. Resist the temptation to keep driving simply because you have already traveled a long way to reach a pass. Turning around early is a sound decision when conditions, visibility, or vehicle clearance are not what you expected.
Set clear turnaround rules for the group
Agree in advance on situations that mean the group will stop or turn back. Examples might include a route that appears narrower than the vehicle’s safe clearance, a washed-out edge, a closure sign, deteriorating weather, or a driver who is no longer comfortable. This conversation is easier at the trailhead than halfway through an exposed section, when everyone may feel pressure to continue.
Make sure every driver understands the plan and can speak up without being teased or overruled. A passenger may notice a problem the driver cannot see, while a less experienced rider may recognize that the group’s pace is too fast. Treat those concerns as useful information. A ride should not depend on the most nervous person staying quiet or the most confident person making every decision.
For an overview of how trail width can affect vehicle choice and route selection, see [Narrow Trails and Machine Width]. If you are traveling with a UTV and a trailer, remember that the ride starts before you reach the trail: choose a staging area that can accommodate your rig and leave room for others to park. [Colorado Trailhead Parking and Staging] can help you think through that part of the day.
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.
