Wife's cousin called. Said they were at Yosemite and looking for a route to the Grand Canyon. They have a Ram 2500 and pulling and Airstream-guessing between 26-30 feet.
The standard route is out the back door (Tioga Pass) and then south on 395 to Kramers Junction (My favorite whistle stop). Then 58 to Barstow and take I40 from there. I assume this late in the year they are going to the south rim. Take 64 north from Williams off I40.
We stayed at a very nice CG just south of Lost Pine, you can't miss it--it has a lot of trees on the east side of 395. In case they want to overnight there.