I-26 has a long pull up Saluda Mtn south of Hendersonville, NC after which there are no significant hills as I-40 follows the river through the Smokies rather than going over them although this section is curvy. I just get in the semi lane and ride with them.
Larry, Beverly & Pat
Pups - Romeo, Teddy Bear, Frankie
2013 Thor Tuscany, 45', Freightliner chassis, Cummins ISL10, towing a Buick Enclave