What's the best route to get from Phoenix to Denver with one or two overnight stops? I'm driving with my girlfriend who's not from this part of the country, so scenic and interesting is better than fast. It looks like the most common route is via Flagstaff, Albuquerque, then straight up on I-25 through Santa Fe into Colorado. Is this the best way to go? We'd like to see a bit of Santa Fe, and also detour to Taos. From there, I'm not sure whether it would be best to cut back over to I-25, or to keep going up on the smaller highways, which could lengthen the trip considerably. Any suggestions there? Finally, between Albuquerque, Santa Fe, and Taos, what's the best choice for an overnight stop?