San Juan Mountains driving roads
2 roads and 47 mapped miles. Pick a road to see its route, character and access notes.
The Million Dollar Highway (US 550) and Lizard Head Pass (CO 145) are the two western legs of the San Juan Skyway, joined at Ridgway. Red Mountain Pass on the Million Dollar Highway has real, recurring avalanche and rockfall closure history — check current conditions before relying on it.
Choose a road
- Lizard Head Pass · CO 14524 miles of CO 145 between Telluride and Rico over Lizard Head Pass (10,222 ft), the western leg of the San Juan Skyway. Sweeping mountain curves through the San Juan National Forest.
- Million Dollar Highway · US 55023 miles of US 550 between Ouray and Silverton over Red Mountain Pass (11,018 ft), part of the San Juan Skyway. Narrow, with sharp switchbacks, steep drop-offs and long stretches with no guardrail.