About This Route
Highway 20 crosses the North Cascades, the wildest mountains in the lower 48. Alpine scenery, glacial peaks, and pristine wilderness make this the Northwest's premier mountain route.
Why ride North Cascades Highway
North Cascades Highway sits in Washington, USA, and earns its place on this guide for a simple reason: it gives riders something most roads can't — scenery that genuinely makes you stop the bike, with a rhythm that suits a relaxed touring pace.
Across roughly 225 kilometres of asphalt, you'll get a real feel for what riding in this corner of USA is about. It's not the longest route in the region and it isn't trying to be — it's a focused, high-quality stretch that rewards riders who take their time.
What the riding actually feels like
On a medium-rated road like this one, you'll want to be on your game but not on edge. Expect a mix of flowing curves, the odd tight hairpin, and short sections where the surface or traffic forces you to think. Solid intermediate riders with some touring miles under their belt will love it.
Read the road first, then commit. The combination of surface, sightlines and traffic on this route rewards a smooth, relaxed pace far more than aggressive corner entries. The route's twistiness rating of 3/5 and scenic rating of 5/5 give a fair indication of where to focus: more on letting the landscape unfold than on chasing apex after apex.
Best time of year to ride
The honest window is May-October. In practical terms, this route really shines in autumn — golden light, fewer cars and tarmac that's still warm enough for confident cornering. If you only have a narrow weather window, aim for a weekday rather than a weekend — you'll share the road with far fewer cars and tour buses, and the popular pull-offs won't be jammed.
Fuel, food and stops
Reliable fuel options along or near the route include Marblemount, Winthrop. Top up before any long climb — pumps in mountain villages can be closed at lunch or on Sundays.
For food and coffee, Winthrop, Marblemount are solid stops. Aim for a proper sit-down lunch rather than a vending-machine snack — the locals eat well in this region.
⚠️ Safety and hazards to watch for
Specific hazards on this route include: Weather; Wildlife; Snow.
- Mountain weather
- Wildlife
- Seasonal road
- The high passes (Rainy, Washington) close every winter for avalanche control — typically shut from around December and not reliably open until late May/June (2026 reopened ~June 25) — always check WSDOT before riding.
Who this route suits
North Cascades Highway works especially well for photographers and slow-tour riders chasing scenery, adventure bike riders who don't mind the occasional rough patch. Recommended bike types are Touring, Adventure, but realistically anything in good mechanical condition with decent tyres will do the job — the road matters more than the badge on the tank.
Insider tips
- Ross Lake Overlook
- Diablo Lake's turquoise water
- Closed in winter