United States, Washington
Glacier peaks, turquoise reservoirs and long clean sweepers with almost no traffic.
Length
114 km
In miles
70.8 mi
Driving time
2 hr 51 min
Atlas rating
9.3 / 10
The run
Marblemount to Winthrop, following the SR 20. Drive it in either direction, though the views usually favour the climb.
Season
Closed between Ross Dam and Winthrop from November to April
Checked by the Drivers Atlas desk
Scored and written by the Drivers Atlas editorial desk, drawing on driven routes across the UK and Europe, mapping data and member road reports. Every road in the library carries a driving and scenery score set by the same method. How we score roads.
Last reviewed 26 April 2026
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210 km away
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Duffey Lake Road
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Icefields Parkway
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Going to the Sun Road
A cliff shelf road through Glacier National Park under hanging valleys.
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