Continental Divide Trail – Red Rock Pass
Pioneer wagon route over Continental Divide
Red Rock Pass cuts through the Centennial Mountains along the Montana-Idaho border, following wagon ruts carved by pioneers heading to Oregon Territory in the 1860s. This remote section of the Continental Divide Trail climbs through aspen groves and open meadows before hitting technical limestone shelves near the 7,056-foot summit, where you’ll cross from Montana’s Red Rock Creek drainage into Idaho’s Horse Prairie Valley. The route passes weathered grave markers and remnants of stage stations that served travelers on the Corinne-Helena Road.
Moderate difficulty with high-clearance 4WD required for rocky sections and seasonal creek crossings. Best tackled June through September when snowpack clears—early season can mean muddy approaches and impassable drifts at elevation. No permits needed, but fuel up in Lima or Monida before heading out. Dispersed camping available throughout, with incredible star-filled skies and zero cell service. This is genuine frontier country where you’ll encounter more elk than people and gain serious appreciation for what those early travelers endured.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | Camping, High Altitude, Historic, Remote, Scenic |
| Length (miles) | 28 mi / 45.1 km |
| Duration | 1-2 days |
| Max elevation (ft) | 7056 ft |
| Best season | June-September |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Lima, Montana |
| Land manager | Bureau of Land Management |
| 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 stock Tacoma or 4Runner handle Red Rock Pass, or do I need a built rig?
A stock high-clearance 4WD will get through, but the technical rock sections near the pass will test your skid plates. Lifted with all-terrain tires is better — low-hanging bumpers and stock all-seasons will cause you grief.
When does Red Rock Pass actually open in spring, and can I run it in October?
June is realistic for a clear crossing — snowpack at 7,056 feet lingers into late May most years. October is a gamble; early fall storms can close it fast, and the BLM doesn't plow it.
Do I need a permit to drive or camp on this route?
No permit required — this is BLM land with free dispersed camping. No fees, no reservation system, no check-in. Follow Leave No Trace and pack out everything.
What's the hardest section and what am I actually dealing with?
The rocky climb approaching the Continental Divide summit is the crux — loose embedded rock, off-camber shelf road, and limited room to maneuver. It's not a death trap, but it demands focus and a patient throttle foot.
There's zero cell service — how far is the nearest fuel and should I carry water?
Lima, Montana is your last fuel stop before the route; top off there. Yes, carry your own water — crossings exist but water quality is unverified and the route is remote enough that a breakdown means you're waiting on the vehicle behind you, not a tow truck.
Trail track
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