The route from St. George to Tucson is a 750-kilometer drive. You will take I-15 South to I-10 East, passing through Las Vegas and Phoenix. This drive takes approximately 7 hours of active transit. It is a straightforward route that is manageable in a single day. You will experience the desert landscapes of Utah, Nevada, and Arizona.
Total Distance: 750 km driving distance; 600 km straight-line air distance.
Traffic in Phoenix can be heavy; plan accordingly.
Fall, winter, and spring to avoid the extreme summer heat.