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U.S. Basin in Colorado
San Juan Mountains route collection

ADVENTURE ROUTE COLLECTION · COLORADO

San Juan Mountains: High Pass Progression

Choose from eight routes near Silverton, Ouray, and Telluride. Start on a short alpine road. Add high passes, shelf roads, and an expert descent later.

WHY IT FITS

Why this progression can fit your trip.

The routes share one mountain region. Each stage adds altitude, exposure, rough ground, or a longer day without resetting the progression.

ROUTE PROGRESSION

Add one skill at a time.

Drive only the stages that fit your vehicle, experience, weather, and current access. A later stage is not a required finish.

01easy

U.S. Basin

Route distance
9.3 mi
Allow
2–3 hours

Start with a short alpine road. Use it to check altitude, weather, and braking before a full pass.

Access note: Source snapshot: Open. Check the live source before travel.

Topographic route map for U.S. Basin
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

U.S. Basin, from start to finish

Climb
+1,984 ft
Descent
2,055 ft
12,126 ft10,207 ftSTART8 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

Ophir Pass in Colorado
ROUTE VIEW · AI-ASSISTED EV PLACEHOLDER WHERE NOTED
02moderate

Ophir Pass

Route distance
10 mi
Allow
Half day

Add a high shelf road and loose talus. Give uphill traffic room and use established pullouts.

Topographic route map for Ophir Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Ophir Pass, from start to finish

Climb
+2,652 ft
Descent
1,779 ft
11,791 ft9,215 ftSTART9.5 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

03moderate

Corkscrew Pass

Route distance
4.8 mi
Allow
Half day

Add tighter turns and changing surface color above the valley. Keep room for uphill traffic and weather exits.

Access note: Source snapshot: Open. Check the live source before travel.

Topographic route map for Corkscrew Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Corkscrew Pass, from start to finish

Climb
+2,528 ft
Descent
720 ft
12,234 ft9,706 ftSTART4.5 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

04moderate

Stony Pass

Route distance
36.5 mi
Allow
Full day

Add a longer pass with water crossings and fewer services. Confirm the exit and the return-energy limit before you start.

Access note: Source snapshot: Open. Check the live source before travel.

Topographic route map for Stony Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Stony Pass, from start to finish

Climb
+2,966 ft
Descent
4,118 ft
12,527 ft9,036 ftSTART32.6 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

Cinnamon Pass in Colorado
ROUTE VIEW · AI-ASSISTED EV PLACEHOLDER WHERE NOTED
05moderate

Cinnamon Pass

Route distance
25 mi
Allow
Full day

Add a longer high-country drive with weather, mining traffic, and several possible exits.

Topographic route map for Cinnamon Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Cinnamon Pass, from start to finish

Climb
+3,728 ft
Descent
1,436 ft
12,543 ft8,918 ftSTART23.3 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

Engineer Pass Road in Colorado
ROUTE VIEW · AI-ASSISTED EV PLACEHOLDER WHERE NOTED
06difficult

Engineer Pass Road

Route distance
21 mi
Allow
Full day

Add rougher alpine ground and a higher summit. Keep enough time for a slow descent.

Topographic route map for Engineer Pass Road
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Engineer Pass Road, from start to finish

Climb
+755 ft
Descent
4,225 ft
12,937 ft8,715 ftSTART19.2 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

Imogene Pass in Colorado
ROUTE VIEW · AI-ASSISTED EV PLACEHOLDER WHERE NOTED
07difficult

Imogene Pass

Route distance
12.1 mi
Allow
Full day

Use Imogene only after the earlier passes feel controlled. Walk uncertain ledges and protect the downhill reserve.

Topographic route map for Imogene Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Imogene Pass, from start to finish

Climb
+4,598 ft
Descent
2,935 ft
13,201 ft8,914 ftSTART10.7 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

Black Bear Pass in Colorado
ROUTE VIEW · AI-ASSISTED EV PLACEHOLDER WHERE NOTED
08expert

Black Bear Pass

Route distance
9.8 mi
Allow
Half day

This one-way descent is an expert stage. Use it only with a suitable vehicle, current local knowledge, and no pressure to continue.

Topographic route map for Black Bear Pass
TOPOGRAPHIC ROUTE MAP · ROUTE LINE FROM TRAILS OFFROAD · BASEMAP FROM USGS

TOPOGRAPHIC PROFILE

Black Bear Pass, from start to finish

Climb
+1,779 ft
Descent
3,781 ft
12,833 ft9,078 ftSTART8.3 MI

Elevation sampled from AWS Terrain Tiles along the published route. Small terrain and GPS differences are normal.

ROUTE READINESS

Do seven checks before you leave pavement.

01

surface

Loose alpine road, shelf sections, rock, and steep descents

02

clearance

Extra clearance and strong tires; later stages need technical clearance

03

remoteness

Mountain towns are near, but recovery can be slow and costly

04

charging

Verify the valley charger before each climb and keep descent alternatives

05

cell Coverage

Download routes and closure notices before the pass

06

weather

Avoid thunderstorms, active runoff, snow, and freeze-thaw damage

07

turnaround

Turn around before the next section removes a safe reverse or exit

BEFORE YOU GO

Make these decisions while you have a signal.

  1. Check the current pass report for every route
  2. Acclimate before the highest stages
  3. Set a firm weather and battery limit

TURN AROUND WHEN

Follow the limits that you set.

  1. Water or loose rock is moving across the road
  2. Wheelspin is needed to continue
  3. Cloud or fatigue removes the safe margin

CARRY

Prepare for common problems.

  • Tire repair and recovery equipment
  • Warm layers, food, and water
  • Offline maps and satellite communication
Topographic route plate for San Juan Mountains: High Pass Progression
FEATURED ROUTE MAP Use the full trail path for orientation. Confirm current access with the land manager.

OPEN THE LIVE MAP

Check the drive home.

See the route with open chargers and road-distance charging gaps. Planned stations do not change current coverage.