Teton Crest Trail Road — Greys River Loop to Alpine via the Snake River Range South Spine
Wyoming's quiet canyon — 100 miles of almost no one.
While everyone queues for Teton Park’s front-country campgrounds, the Greys River Road runs south from Alpine, Wyoming, through 65 miles of Snake River Range canyon that most people drive past on US-89 without ever knowing it exists. The road follows the Greys River upstream through cottonwood bottoms, crosses numerous shallow fords, and climbs into open sagebrush benches before looping back via Forest Road 10138 to the Salt River Range. The lower canyon is smooth gravel, passable to most high-clearance two-wheel-drives in dry conditions. Push further up toward Murphy Creek and the terrain gets rougher — off-camber shelves, washouts after spring runoff, and ford crossings that vary from ankle-deep to door-panel deep depending on snowmelt timing.
Stock high-clearance 4WD with a lift handles this comfortably in summer; recovery gear is recommended for the upper segments. Best season is July through October — the road is gated in winter and spring runoff turns the lower fords into commitment zones. No permit required. Fuel in Alpine or Afton; both are within range. Dispersed camping is wide open across the Bridger-Teton National Forest — you’ll share the river with moose, elk, and osprey and likely nobody else on a Tuesday. Cell service evaporates fast in the canyon. Carry a paper map or downloaded MVUM tiles.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Backcountry, High Clearance, Overland Route |
| Surface | Dirt, Gravel, Mixed |
| Features | Camping, Remote, Scenic, Water Crossings |
| Length (miles) | 100 mi / 160.9 km |
| Duration | 1-3 days |
| Max elevation (ft) | 7200 ft |
| Best season | July-October |
| Minimum vehicle | High-clearance 4WD recommended for upper segments |
| Nearest town | Alpine, Wyoming |
| Land manager | Bridger-Teton National Forest, Greys River Ranger District |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | USFS Bridger-Teton Greys River Bridger-Teton National Forest |
| 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
Can a stock Tacoma or 4Runner handle this route, or do I need a lifted rig?
A stock high-clearance 4WD like a Tacoma or 4Runner will handle most of the route fine. The upper segments along the Snake River Range spine get rougher with embedded rock and shelf road exposure — a lift helps but isn't mandatory if you're comfortable reading terrain and not dragging skid plates.
When does the Greys River Road typically open in spring, and is it passable through October?
The lower canyon sections usually open by late May or early June depending on snowpack, but upper elevations near the South Spine can stay snowed in through late June. October is generally still accessible but early snowstorms hit fast in the Snake River Range — aim for July through mid-October to be safe.
Do I need a permit or are there any fees to drive this route?
No permit required and no day-use fee to drive the Greys River corridor — it's Bridger-Teton National Forest land managed by the Greys River Ranger District. Dispersed camping is free; just follow the 14-day stay limit and standard Leave No Trace rules.
What's the hardest section of the trail and what should I actually expect there?
The upper South Spine segments are the most demanding — expect narrow shelf road with steep drop-offs, loose gravel, and sections where two rigs cannot pass without one backing up. It's not technical rock crawling, but one bad line or a distracted moment on a wet day will put your passenger-side tires over the edge.
How serious are the water crossings, and is there anywhere to top up drinking water along the route?
Water crossings on the Greys River Road are generally shallow and braided — most rigs clear them without drama in normal flow, but spring runoff can push depths that require real commitment. The Greys River itself runs the length of the canyon and side streams are frequent, so water for filtering is plentiful; carry a filter and don't count on any services because there are none between the trailhead and Alpine.
Trail track
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