You can do a sensational route from LV, up through Zion, Bryce, Capitol Reefs, the Grand Tetons into Yellowstone. Almost all off the main highway save the bit linking Capital Reefs and Salt Lake. Across Montana and into Idaho along the Snake river is fabulous too. To come back, I'd miss that whole corner of NW Nevada and head across Oregon to Bend, Crater Lake and Ashland before coming back down into Cal for the Lava Beds, Mt Shasta and the Lassen Volcanic National Park. Then you can go down to Lake Tahoe and across to the 395 down the back of the eastern Sierras across back to Vegas. All of it breathtaking.
You can do a sensational route from LV, up through Zion, Bryce, Capitol Reefs, the Grand Tetons into Yellowstone. Almost all off the main highway save the bit linking Capital Reefs and Salt Lake. Across Montana and into Idaho along the Snake river is fabulous too. To come back, I'd miss that whole corner of NW Nevada and head across Oregon to Bend, Crater Lake and Ashland before coming back down into Cal for the Lava Beds, Mt Shasta and the Lassen Volcanic National Park. Then you can go down to Lake Tahoe and across to the 395 down the back of the eastern Sierras across back to Vegas. All of it breathtaking.