United States, Colorado
A mining road cut into the San Juan cliffs with sheer drops and no barrier.
Length
40 km
In miles
24.9 mi
Driving time
1 hr 15 min
Atlas rating
9.5 / 10
The run
Ouray to Silverton, following the US 550. Drive it in either direction, though the views usually favour the climb.
Season
Snow, avalanche and no guardrails in winter
Nearby
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