Hey BiMoped, there is a great guidebook called Cycling USA: West Coast by lonelyplanet that is very helpful for going up the coast. The trip takes about a month going at a fairly leisurely pace. Most of the way there are bike paths and the pacific coast highway, but you do occasionally have to get creative with navigation (a gps helps). A ways before camp pendleton you have to go east of the 5 for a while, and cross back over to the west side of it around Oceanside. If you google Bike Ride: Los Angeles - San Diego, there are interactive maps.