We travel thru Missouri every year to get to Quartzsite AZ. We use I-44 thru MO. into Oklahoma, Tulsa to OK City,then south to Lawton and into Wichita Falls Tx. Take Route 277 out of Wichita falls, nice ride, towards Abilene. Pick up I-20 west thru Midland,Odessa, Monahans and Pecos, till it ends at I-10 west. This will take you towards EL Paso, then into NM. We stay at the Little Vineyards rv park at ext 85, in Deming. They even have a small indoor pool. We have found this is the best and quickest southern route to Arizona. All interstate except for the 277 route in Texas.(277 is pretty new, it by passes all the small towns, so fill up with fuel before you get on it.) Just stay on I-10, no mountains to climb, and no snow! The scenery at Texas Canyon just after entering Arizona is worth a few photos. Giant rocks left by the glaciers many years ago. Breathtaking
Have a safe trip and enjoy your ride. dona