Hwy 1 is a nice ride if you don't want to make time. Lots of curves, but in a good way. The thing is, though, summer doesn't start up here until July so it is likely to be cold and wet still. Actually you should count on cold/wet nomatter where you ride - unless you go all the way out east of the cascades where it will be just cold. Hwy 1 can be pretty slippery in the wet - especially with all the moss/algae or whatever slime it is that grows on it. Shouldn't be a lot of traffic there though, most of the towns along it are very economically depressed and pretty sad (logging towns). Or, you could cobble together a ride just east of I-5 using Hwys 90 to 18 to 169 to 165 etc and on to Portland. Finally, there is a bicycle ride every year from Seattle to Portland that goes along rural roads from Seattle to Longview WA, across the river to Hwy 30 and down to Portland that would be good. You could Google "Seattle to Portland bicycle" or "STP ride" and probably come up with the exact route without too much trouble. There's no liberals out here so you needn't worry about that. Just a bunch of hippy tree people with a fondness for herbology.
