R-297 · Route File

Million Dollar Highway

San Juan Mountains, Colorado · United States

The celebrated US 550 section between Ouray and Silverton over Red Mountain Pass, forming the most exposed mountain segment of the San Juan Skyway.

Primary window: Year-round maintained · Jun - Sep preferred for motorcycles
References: 8
Coverage: established
Reviewed: Jul 2026

Route tire evidence

Tires reported on Million Dollar Highway

No reviewed tire observation is published for this route.

Open the Tire Library

No tire name is inferred from route popularity, forum mentions or marketing. A report appears only after its tire, motorcycle, route context, date and named source are reviewed.

Route-specific references

Sources for Million Dollar Highway

Information tied directly to this road, track or route.

Roads and access

US 550 travel alerts
official · Colorado Department of Transportation
Route-specific avalanche, rockfall, closure and construction information for Red Mountain Pass

Maps and navigation

Specialist and community

San Juan Skyway
official · Colorado Department of Transportation
Official identity of the Ouray–Silverton US 550 section as the Million Dollar Highway and wider byway context

Regional reference desk

Authorities covering the wider journey

Shared road, weather and access services used across Route Files in this region.

Weather

Roads and access

COtrip
official · Colorado transportation authority
Current Colorado closures, incidents, weather, cameras, traction restrictions and pass conditions

Emergency and medical

Colorado wildfire map
official · Colorado Division of Homeland Security and Emergency Management
State wildfire incident, evacuation and public-information links

Field Links are reviewed references, not live guarantees. Conditions, closures, services and regulations change. Confirm critical information with the responsible authority before relying on it.