Off-road trail17.5 mi4,400 ft gaindifficulty: difficult

Imogene Pass

RegionColoradoAgencyU.S. Forest ServiceLast verified
Imogene Pass — off-road trail near Ouray, Colorado, Colorado
Photo by Tim Mossholder via Wikimedia Commons (CC0)
Trail vitals7 facts
Length
17.5mi
Elev gain
4,400ft
Technical difficulty
Difficult
Direction
Point to point
Vehicle
Low-range 4WD with high clearance, off-road tires, and skid plates. The trail's narrow rocky sections require experienced drivers.
Best months
Jul, Aug, Sep
Cell coverage
None on the pass

Imogene Pass is the second-highest drivable mountain pass in Colorado at 13,114 feet, connecting Ouray and Telluride across the heart of the San Juan Mountains. The 17.5-mile route climbs Camp Bird Mine Road from the Ouray side to the historic Tomboy mining ghost town, crests the pass, then drops Tomboy Road into Telluride. The trail's reputation rests on its narrow shelf-road sections, exposed switchbacks, and the technical climb past the Imogene Basin's mining ruins.

The pass is closed by snow most of the year and typically opens late June to early July, closing again with fall snow in October. Drivers tackling it from Telluride get the steeper rocky northern side as a downhill — slightly easier than driving the same section uphill. Either direction requires low-range 4WD, sturdy tires, and skid plates.

Hazards

Read before you go

  • Snow closure. The pass is closed October through June or early July most years.
  • Lightning. Summer afternoon thunderstorms hit the alpine ridge. Plan to be off the summit by noon.
  • Shelf-road exposure. Single-lane sections with significant drops on the Tomboy side. No guardrails.
  • Rocky surface. Tire damage from sharp rocks. Carry full-size spare.
  • Cell coverage. None.
  • Altitude. The summit is at 13,114 feet. Visitors from sea level should expect altitude effects.
  • Mining hazards. Open shafts and unstable structures at Tomboy ghost town. Stay on the road.

Location

17.5 mi · Off-road trail

Approx. location 37.926, -107.745

Trail facts

5 fields
AgencyU.S. Forest Service
Nearest townOuray, Colorado
Websitewww.fs.usda.gov/uncompahgre
ClosedOct, Nov, Dec, Jan, Feb, Mar, Apr, May, Jun
Approx. location37.926, -107.745

Getting there

Directions

From Ouray (north side). From Ouray, drive south on US-550 (the Million Dollar Highway) for half a mile, turn west on Camp Bird Road. Follow signs for Imogene Pass.

From Telluride (south side). From Colorado Avenue (Telluride's main street), drive north on Oak Street, then northeast on Tomboy Road. The road climbs out of town directly.

Approximate summit coordinates: 37.926° N, -107.745° W.

Photos

4 photos

Photos · 4

Field notes

Getting Oriented

Imogene Pass crosses the Uncompahgre National Forest in San Miguel and Ouray counties, between two historic mining towns: Ouray ("the Switzerland of America") on the north and Telluride on the south. The pass takes its name from the Imogene Basin, named in turn for the daughter of a 19th-century mine owner. Tomboy Mine, near the summit, was the second-largest gold mine in the world at its peak in the 1890s; its stone ruins are the route's main historic attraction.

Trail Overview

From Ouray, the route climbs Camp Bird Mine Road past Camp Bird Mine — still active, still no public access. Above Camp Bird the road turns onto Imogene Road, climbs through Upper Camp Bird, and switchbacks up to the Imogene Basin. The summit at 13,114 feet sits at the divide between the Uncompahgre and San Miguel drainages.

From the summit the road drops onto Tomboy Road, passes the Tomboy ghost town ruins, and switchbacks down a narrow shelf into Telluride. The Tomboy side has the most exposure — single-lane shelf with significant drops, no guardrails, and limited turnouts. Driving the full pass takes 2.5 to 3.5 hours without stops.

Points of Interest

  • Tomboy ghost town. Stone ruins of a 1890s mining town that produced gold and silver. National Register of Historic Places.
  • Imogene Basin. Glacial cirque with mine ruins and a small lake.
  • Camp Bird Mine. Active mining operation visible from the road. No public access.
  • The summit. Second-highest drivable pass in Colorado at 13,114 feet.
  • Bridal Veil Falls overlook. Distant view of Colorado's tallest waterfall on the Telluride side.
  • Yankee Boy Basin spur. Off Camp Bird Road, accessing wildflower meadows below Mt. Sneffels.

Where to Camp

Dispersed camping is allowed in the surrounding national forest with the standard 14-day stay limit. There are no developed campgrounds on the pass itself. Amphitheater Campground above Ouray and Telluride Town Park are the closest fee campgrounds. The Ouray and Telluride sides both have commercial RV parks and lodging.

Tips for a Safe and Enjoyable Trip

  • Travel July through September. Snow closes the pass October through June or early July.
  • Carry recovery gear, a full-size spare, and a plug kit. Tire damage on rocks is common.
  • Cell coverage is absent on the pass.
  • Drive Telluride to Ouray to take the technical northern side downhill (slightly easier).
  • Yield to uphill traffic. Backing up on shelf-road sections is dangerous.
  • Lightning hits the high passes regularly in summer afternoons. Plan to be off the summit by noon.
  • Watch for hikers and runners (the Imogene Pass Run, an annual race, uses the route).
  • Stay on the road. Off-road driving destroys the alpine tundra, which takes centuries to recover.
  • Contact the Uncompahgre National Forest's Ouray Ranger District at 970-240-5300 for current conditions.

Frequently asked

Common questions

How difficult is Imogene Pass?
Imogene Pass is rated difficult. The route runs 17.5 miles with 4,400 feet of elevation gain.
What kind of vehicle do you need for Imogene Pass?
Low-range 4WD with high clearance, off-road tires, and skid plates. The trail's narrow rocky sections require experienced drivers.
When is the best time to visit Imogene Pass?
The best months are Jul, Aug, Sep. Avoid Oct, Nov, Dec, Jan, Feb, Mar, Apr, May, Jun.
Is there cell service at Imogene Pass?
None on the pass