In terms of time, looks like I-40W to 17 South would be the fastest... b/c it's all freeway, likely 70 mph+ limit. Should be 7-8 hours
The shortest route is about 422 miles, which would take about 6 hours and 36 minutes to drive.
According to the shortest route on Mapquest, these two cities are a distance of about 420 miles apart.
Take I-17 NORTH, from Phoenix, to I-40 EAST to ALBUQUERQUE at EXIT 340A in Flagstaff.Take I-40 EAST to ALBUQUERQUE.
The shortest route is I-75 N.
The shortest driving route from Seattle, WA to Phoenix, AZ is approximately 1,400 miles via I-15 S.
The safest driving route to Phoenix, Arizona to Detroit, Michigan would be take I-70 and I-55. Most of the driving will be done on I-17.
Take I-40 WEST through Arizona to I-17 SOUTH to PHOENIX at EXIT 195 in Flagstaff, ARIZONA.Take I-17 SOUTH to PHOENIX.
The shortest is I-80 East.
Napa Valley is approximately 800 miles northwest of Phoenix, Arizona. The driving distance between the two locations is around 12-13 hours depending on traffic and route taken.
Take I-17 NORTH to I-40 EAST to ALBUQUERQUE at EXIT 340A.Take I-40 EAST to I-25 NORTH to SANTA FE at EXIT 159C in Albuquerque.Take I-25 NORTH to Denver.
I-10 West 60 West 91 West
Take I-17 NORTH to I-40 EAST to ALBUQUERQUE at EXIT 340A in Flagstaff.Take I-40 EAST through Arizona to I-25 NORTH to SANTA FE at EXIT 159C in Albuquerque in NEW MEXICO.Take I-25 NORTH through New Mexico to Denver.