Has anyone cycled that region (Rainier, Mt Baker, North Cascades)
Would cycling from Portland to Vancouver (BC) be possible mostly on quiet roads? Are there lots of state parks with cheap camping and villages to pick up food along the way?
I was planning to bike Van to San Fran, but think doing a loop might be more manageable distance-wise, have more diversity and, most hopefully, make me avoid the heaviest traffic.
Suggestions?

