
Originally Posted by
glc
Welcome to RTA!
It's going to take you at least 2.5 days without any sightseeing delays. You will need to get out of Phoenix early enough Friday to drive about 6 hours if you want to get to Seattle Sunday night.
Take I-10 to Redlands CA, then CA-210 to I-15. Take that north to Hesperia and spend the night. Next day, take US-395 north to CA-58, take that west to Bakersfield and take CA-99 north to Stockton, then CA-4 west to I-5. Take that north to Redding and spend the night.
If you can extend till Monday night, I'd recommend you do that, and delay your start till early Saturday morning - Friday rush hours are no fun. That way, you could extend your first night to Bakersfield and the second night to Medford OR.