I've ridden one of them... regretfully only one and I can vouch for it being included on the list.
Highway 1 in California is indeed scenic and a beautiful ride. So is Highway 12 on the Oregon coast. I've ridden from Lincoln City, Oregon south down highway 1 to just south of Bodega Bay, California.
The scenery is spectacular and the ride was lots of fun. The added attraction for us was there are State campgrounds in Oregon spaced close enough together so you can camp every night, which we did, and most have a hikers/cyclists only section, so you don't have to worry about a popular camp ground filling up before you can ride there.
“The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not.”
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