LuckyLo wrote:
Do no ride on hwy 5!
Not sure what type of riding you are interested in or types of bikes.
You can also ride the commuter train (Surfliner) from San Clemente station to Oceanside. From Oceanside you can ride down Hwy 1 into Torrey Pines and La Jolla.
There is this place next to the train station with some places to ride.
https://urbanbicycleoutfitters.com/where-to-ride/ While one can take the Surfliner (Amtrak) the commuter train is actually the Metrolink Orange County line.
http://www.metrolinktrains.com Metrolink is a bit cheaper and goes as far as Oceanside. In Oceanside one can get on the Coaster (San Diego County's coastal train service - it goes to SD but makes more stops than Surfliner) Surfliner goes all the way to downtown San Diego. Amtrak requires reservations for bringing a bike. The others do not and have more bike capacity.
Many from OC often do their own version of an Amtrak Century (or less) and ride down to SD somewhere and take the train back. I've done a few, stopping for lunch at one of the fine breweries and then taking the train home.