How many miles is it from Phoenix to Seattle?

Answer 1

1485 give or take a few miles.
1,515 miles taking this route:

1. Take I-10 WEST from Phoenix to I-210 WEST to PASADENA at EXIT 77B near Redlands, INLAND EMPIRE, California.
2. Follow I-210 WEST to I-5 NORTH to SACRAMENTO at EXIT 1A.
3. Take I-5 NORTH to Seattle. To bypass PORTLAND, take I-205 NORTH (EXIT 288 off I-5 in Oregon).