Joining a bike club has many advantages. The first being safety. The old saying of there is safety in numbers is correct. When you bike with a group of riders you become more visible and basically safer. Also, riding in a group allows you to socialize amongst the other riders. Lastly, your fitness will improve because you will tend to pedal faster in a group than by yourself. Check out some of the bike clubs located in Ventura County:
Moorpark Bike Rides - Moorpark
Channel Islands Bike Club - Ventura
Conejo Valley Cyclists- Thousand Oaks
Fast Friday Cycling - Newbury Park
Old Kranks Bike Club - Westlake Village