About 18-20 hours, but I flew into SLC and rented a Jeep instead. So 3 hours to the first stop (Canyonlands) for me
All-in-all I drove over 1400mi on this trip and I figure about 27 hours of total driving time over 2 weeks. Glad it wasn't on my car
Here it is roughed out on Google Maps:
https://www.google.ca/maps/dir/40.77...f64139!1m0!3e0