Originally Posted by AZBuck
The route that Mark gave you is generally the best for someone pulling a trailer, but I'd make one change. From Albuquerque, NM use I-25 south to I-10 west to Tucson, and also use the cutoff between Hatch and Deming NM on NM-26. This is considerably shorter than I-40 into AZ and then I-17 south to Phoenix and I-10 east(!?) into Tucson. As for crossing the Continental Divide - if there wasn't a sign on I-10 where you cross it in NM, I'd swear you wouldn't even know it was there.