Weminuche Pass Trail
Sky-high rock crawling at 13,020 feet
At 13,020 feet, Weminuche Pass holds the title as Colorado’s highest vehicle-accessible pass, but that accessibility comes with a brutal 12-mile price tag that will test every bolt on your rig. This isn’t some tourist drive—it’s a mining road carved in 1881 that climbs 4,200 vertical feet through the San Juan Wilderness, crossing the Continental Divide where the air is thin enough to make your engine gasp and the rocks sharp enough to slice sidewalls like deli meat.
The trail launches from Forest Road 380 near South Fork and immediately starts punishing anything less than a heavily modified 4×4 with lockers front and rear. You’ll need 35-inch tires minimum, skid plates, and a full recovery kit—not for show, but because you’re going to use them. The route follows an old mining grade that switchbacks relentlessly through dense timber before breaking treeline around 11,500 feet, where the real technical sections begin. Loose scree, off-camber shelves, and boulder fields demand precise wheel placement while your engine struggles in the altitude. Cell service disappears about three miles in, so if you break an axle up here, you’re walking out or waiting for another rig brave enough to make the climb.
July through September offers the only realistic weather window—snow blocks the pass until late June and returns by early October, sometimes earlier. The US Forest Service maintains this as a legitimate route through the Rio Grande National Forest, but don’t expect trail markers or maintenance crews. Water crossings are minimal but expect mud holes that’ll swallow a tire, and fuel up in South Fork because there’s nothing resembling civilization for 50 miles in any direction. Dispersed camping is allowed along the route, and you’ll find yourself tempted to spend a night just to soak in the isolation.
What you get for surviving Weminuche Pass is a view from the literal top of Colorado’s accessible world—a 360-degree panorama of 13,000 and 14,000-foot peaks stretching to every horizon, the knowledge that you’ve driven higher than most people will ever climb, and probably a few new dents in your quarter panels. This trail separates the weekend warriors from the real deal. If your rig can handle Weminuche Pass, it can handle just about anything the Rockies throw at it.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Rock |
| Features | High Altitude, Remote, Scenic |
| Length (miles) | 12 mi / 19.3 km |
| Duration | 1 day |
| Max elevation (ft) | 13020 ft |
| Best season | July-September |
| Minimum vehicle | Modified 4WD with lockers |
| Nearest town | South Fork, CO |
| Land manager | US Forest Service |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| Official sources | fs.usda.gov |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Will a stock 4Runner or Tacoma make it through Weminuche Pass Trail?
No. This trail demands lockers front and rear, a suspension lift, and rock sliders at minimum. A stock rig will be high-centered or damaged on the technical rock sections well before the summit.
When does Weminuche Pass Trail typically open and close each year?
The trail is generally passable July through September. Snow can linger into early July at 13,000 feet and return by October — sometimes earlier. Always check current conditions with the Rio Grande National Forest before heading out.
Do I need a permit or pay any fees to run Weminuche Pass Trail?
No permit is required and there are no fees to access this trail. It falls under Rio Grande National Forest jurisdiction — standard Leave No Trace rules and dispersed camping regulations apply.
What's the hardest section, and what specifically makes it dangerous?
The upper rock climb approaching the Continental Divide at 13,020 feet is where rigs get hurt. Loose, off-camber boulders with zero recovery room and significant exposure on the downhill side demand precise line selection — one bad move can roll a vehicle.
Is there any water or gas available along the route, and how far is the nearest fuel from the trailhead?
There is zero cell service on trail and no services anywhere along the 12-mile route. South Fork, CO is the closest town for fuel — top off there before you go, and carry extra in a jerry can given the remote nature of this run.
Trail track
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