The drive
SR 20 climbs from the Methow Valley near Twisp over Loup Loup Pass, 4,020 feet, and down to Okanogan. This drive runs east. It begins just past the Highway 153 junction and climbs steadily through pine and fir, passing the Loup Loup ski area at the summit.
The descent is a long, curving drop toward the Okanogan Valley, with open dry hills at the bottom. The grades are moderate and the curves easy.
It is the next stretch of the Cascade Loop after the North Cascades Highway, and it is a short, uncomplicated crossing of about 29 miles.
Along the way
- Twisp (Highway 153 junction)
- Loup Loup Summit
- Okanogan
Good to know
- The pass is kept open in winter, but snow and ice are common and traction tires or chains can be required.
- Check the WSDOT pass report before crossing between November and spring.
- Services are in Twisp and Okanogan; there are none on the summit outside ski season.
Open all year, weather permitting. Roads close for snow, fire, storms and repairs: before you set off, check WSDOT travel map and alerts.
Questions about this drive
How long does Loup Loup Pass take to drive?
Twisp to Okanogan on SR 20 over Loup Loup Pass is 29 miles and takes about 40 min.
Is Loup Loup Pass open in winter?
Yes, SR 20 over Loup Loup Pass is open all year, but snow and ice are common, so check WSDOT for traction requirements.
How high is Loup Loup Pass?
Loup Loup Pass on SR 20 is 4,020 feet.
Is Loup Loup Pass twisty?
Only mildly. SR 20 has gentle curves on the climb and a long, curving descent to Okanogan.
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More drives near here
Distance, time, elevation, curves and intensity are from Carve's route. Checked 2026-10-28.