Since I live on Hwy 2, my go-to is the N Cascades loop: Hwy 2 to Chelan, N to Winthrop, W on 20 to Sedro-Wooley, S on I5 to Hwy 2 and back home. Hwy 20 will be the most scenic and interesting part, and have the most curves and fun sections of the road however it’s closed for the winter at the moment.

Fill your tank before you do the long stretch of Hwy 20, it can be a bit far with small gas tanks and curvy roads making people wrist happy. Stop in the fake Bavarian town of Leavenworth for a beer and a sausage… or the fake Wild West town of Winthrop for whatever they have which is probably going to cause food poisoning. You’ll also want to stop and hang out at the Diablo overlook most likely. The east section can be hot so bring mesh as well as rain gear. Part of Hwy 20 is fresh chip seal, and it will take a toll on your tires. From a Canadian point of view, you could start in Bellingham and run it the opposite way of what I have above.

Rainier is also worth visiting. Lake Crescent is also nice, as are the west coast beaches and Hoh Rainforest but there’s also a lot of boring road in that part of the state. The 101-106 road around Hood Canal is scenic but not very sporty and can have slow moving local traffic.

Send me a PM when it’s riding season if you want someone to do the loop with, assuming my slow touring bike can keep up with whatever you’re on.