You guys like to go in straight lines or around ovals
My favorite drive/ride is the Blue Ridge Parkway/Skyline Drive.
469 + 105 = 574 miles.
Smooth two lane blacktop, limited side roads, follows the mountain ridges. Park land on both sides the whole way. Overlooks, camping, antique touristy stops.
Built mostly during the 1930's as a Public Works Project to help end the Depression under Roosevelt. They used to actually do something with "welfare" money.
The speed limit is 45/35/25, which, on a bike, can translate to about 80/60/40 without much stress.
It rains a lot in the summer, so, you have to be cognizant of that.
https://www.google.com/maps/@35.363...DvF8jzu4TVR4A!2e0!7i13312!8i6656!9m2!1b1!2i46