Concur with route 50 in Nevada!
This map shows you most interesting and remote way to get to Crater Lake, with three small deviations. The red route will include Mulley Point overlooking the Goosenecks of the San Juan, Bridges NP, and Capitol Reef.
In west Utah and east Nevada you'll see some awesome dry lake beds, as well as the attractions in the previous post. If you continue on it north of Fernley up to Pyramid Lake, you'll eventually pass Black Rock City (Burning Man) and then a surprising lake north of there that is perfect for an overnight and some kayaking.
You want to end up at Oregon State Park "Sunset Beach" just west of Coos Bay. Don't miss the botanical gardens 1/2 mile south on the coast and especially the cove on the south side of the gardens. Spectacular, best little spot on the ocean, ever. Then drive 20 miles south to Bandon to see Face Rock and all the other beach spires, but keep the trailer at Sunset Beach.
The first blue detour takes you over to Page and Lone Rock campground at Lake Powell, also Zion if you want to go through the tunnel, or detour around Zion by heading south from Kanab.
The second blue detour goes through Susanville and over to Mt Shasta. If you take the green sub-detour, you go through Aiden, which has my favorite all time country store.
Open the PDF for a more detailed view.
ABQ to Oregon 3.pdf