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United States CO-149 Difficulty: 7/10

Silver Thread Scenic Byway & Slumgullion Pass

Rips through the volcanic San Juan caldera, historic mining towns of Creede and Lake City, and traces the headwaters of the Rio Grande. Climbs Slumgullion Pass with an active geological mudslide earthflow and a punishing 9% continuous grade that tests braking technique and line choice.

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Distance
Distance
74 mi
119 km total run
Turns
Turns
220
3.0 turns per mile
Summit
Summit
11,530 ft
Slumgullion Pass
Surface
Surface
Paved (Twisty)
Difficulty: 7/10
3D Vector Trajectory
CARTO Dark Matter GL
Start: South Fork, CO End: Lake City, CO
Elevation Profile 8,180 – 11,530 ft
SUMMIT 11,530 FT
Slumgullion Pass
Apex Density Index 3.0 curves / mi
Scenic Sweeper Technical Switchback
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Repair

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Nearby Staging
Durango Harley-Davidson & Handlebar Powersports ~73 mi
Durango, United States • +1-970-259-0778
Emergency Tire Replacement | Million Dollar Highway Pit Stop | Full Service
Brands: Harley-Davidson, Honda, Yamaha, Kawasaki, Suzuki
Apex Sports ~129 mi
Colorado Springs, United States • +1-719-475-2437
KTM Master Service | Triumph Certified | ADV Suspension & Tires
Brands: KTM, Triumph, Yamaha, Honda
Lodge

Rider-Friendly Lodging

Covered Parking
Historic Tapoco Lodge & River Tavern ~1266 mi
Robbinsville, NC

Legendary 1930s Alcoa stone lodge perched right on the raging rapids of the Cheoah River, 5 miles south of the Tail of the Dragon. High-end rider hospitality with roaring river vistas, stone hearths, and an upscale evening tavern where motorcyclists toast surviving 318 curves.

Cue

Tank-Bag Quick Reference Sheet

Start Point South Fork, CO 37.6700, -106.6397
Summit / High Point Slumgullion Pass 11,530 FT Summit
End Destination Lake City, CO 38.0294, -107.3153
T-CLOCS Pre-Ride: Tires & Wheels Controls & Cables Lights & Electric Oil & Fluids Chassis & Stand
DUNLOP
Official Tire Partner: Grip for Mountain Passes
Dunlop Roadsmart IV and Trailmax Mission provide maximum wet/dry confidence on mountain switchbacks.
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Frequently Asked Questions

How many curves and miles is Silver Thread Scenic Byway & Slumgullion Pass?

Silver Thread Scenic Byway & Slumgullion Pass spans 74 miles and packs approximately 220 curves (3.0 curves per mile) with an elevation delta of 8,180 ft - 11,530 ft (Slumgullion Pass) and technical rating 7/10.

Where are the start and end coordinates?

The route starts at South Fork, CO (Latitude 37.67, Longitude -106.6397) and finishes at Lake City, CO (Latitude 38.0294, Longitude -107.3153).

How can I download the GPX file for GPS navigation?

Click the "Download Free GPX" button on this guide. The standard XML file is 100% free and ready to load into Garmin zūmo, BMW Motorrad Connected, Rever, Scenic, or Google Maps.

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