I’d run it a bit different; From Rockville I would run Grafton Mesa Ghost town road (check out the school house used in Butch Cassidy and the Sundance Kid Movie, from there Smithsonian Butte Trail to Big Junction. Run Ut 59 to Hilldale, then take the back road that runs by Coral Pink Sand Dunes, then run Moquith Mountain Loop (they are getting ready to close some of the spurs), from there run The Barracks trail up to Mt Carmel Junction, run US 89 up to Glendale, then head southeast to Skutumpah Road, run that up to Cannonville, take UT 12 into Escalante, Run Hell’s Backbone that goes north than loops right back to right around the Burr Trail, Run the Burr trail, but at the half way point run Upper Mulley Twist (short side spur trip), take the remainder of the Burr down to Bull Frog Marina, take the ferry across to Hal’s Crossing, run Ut 95 to Arch Canyon, run Arch Canyon, Run Hotel Rock, check out Butler Wash Ruins afterwards which is just before the trun off to Cotonwood Wash Road, Run Cottonwood wash road, to north and south elk ridge, to cottonwood canyon, to Beef Basin, to Bobby’s Hole, to Elephant Hill, to Lockhart Basin, Check out Lockhart Canyon while you are there, to Chicken Corners, to Hurrah Pass, to McD’s (a numner 3 vlaue meal will taste mighty fine by then.
I got all the maps and then some for Utah. Figure out your route, I can merge all the maps and give you back one big whopping GPX file for you to upload into a GPS. Give me at least two weeks leeway though