ditto 2nd post: Adventure cycling magazine Companions Wanted | Adventure Cyclist | Adventure Cycling Association

UK has the CTC. The national cycling charity | CTC

Popular routes and places for cycletouring, Just Go.. and You will, naturally meet people on the same route, in the same places .

The traffic flow down the pacific coast is north >> south as that is the side the ocean is on..
and the summer weather is mostly tailwinds coming from the NW.