Thanks in advance for any/all suggestions of good route(s) to travel from surprise, AZ to vancouver, Wa/Portland,OR area in early summer.. WE will be in an rv (type yet to be determined). Our ideal route would be less crowded but also have gas stations along the way enough not to worry about running out of gas. we just drove here (from vanc, wa) last week and went thru oregon (was fine) and then CA (sacramento) and it was traumatic-too busy and we hope never to take that route again. (onramps were horrible and short and we know we had it pretty good in WA state with long onramps). So,looking for other ideas/routes. we have a road atlas we can refer to but your knowledge is invaluable those of you who have taken different routes. we know we may have ot go thru some busy spots but we hope to keep that to a minimum. we will camp along the way . thanks so much.