Centennial Mountains Continental Divide Traverse
Continental Divide grizzly country ridge running
The Continental Divide splits Montana and Idaho through some of the wildest country left in the Lower 48, and this route follows that razor’s edge for 35 miles of technical high-altitude driving. You’ll cross into grizzly bear habitat where wolves still hunt elk, navigating narrow ridge roads that drop off into thousand-foot canyons on both sides. The route connects Monida Pass to West Yellowstone, passing through Sawtell Peak area where mining claims from the 1890s still dot the landscape.
This is Expert-level terrain requiring full-size 4WD with low range, recovery gear, and bear spray. Summer-only access from July through September due to snow, with no services for 40+ miles once you commit. Cell service is nonexistent, and weather changes fast at elevation. What you get is absolute solitude in some of the most pristine wilderness left in America, plus bragging rights for completing one of the region’s most challenging Continental Divide crossings.
Trail Specs
| Difficulty | Expert |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Dirt, Rock |
| Features | High Altitude, Historic, Remote, Scenic |
| Length (miles) | 35 mi / 56.3 km |
| Duration | 1-2 days |
| Max elevation (ft) | 8847 ft |
| Best season | July-September |
| Minimum vehicle | Full-size 4WD with low range |
| Nearest town | West Yellowstone, Montana |
| Land manager | Beaverhead-Deerlodge National Forest |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a lifted Tacoma or 4Runner handle this, or do you need a full-size rig?
A mid-size with solid skid plates, at least 33s, and low range can make it, but tight shelf roads and embedded rock sections favor full-size rigs with more torque and longer wheelbase stability. Stock or mildly modified mid-sizes should stay home.
When does the Centennial Mountains route actually open, and what shuts it down early?
July through September is the reliable window — snowpack at 8,000+ feet can keep the ridge impassable well into June. Early September storms can close it fast; check with Beaverhead-Deerlodge NF before you go if you're pushing either edge of the season.
Do you need a permit to run this trail?
No permit required for day use or dispersed camping on Beaverhead-Deerlodge National Forest land. Standard Forest Service rules apply — camp 200 feet from water and trails, pack out everything.
What's the hardest section and what actually makes it technical?
The exposed ridge sections combine loose rock, narrow shelf road with significant drop-offs, and no room to turn around — you're committing. Erosion cuts and embedded boulders demand constant line selection; one bad read and you're high-centered with no recovery anchor in sight.
Is there any water or fuel along the route, or do you need to pre-plan hard?
There is zero fuel between West Yellowstone and the far end — plan for the full 35-mile trail plus your drive out, and carry extra. Water crossings exist on the route but treat everything; your nearest town with services is West Yellowstone, so resupply before you leave.
Trail track
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