Sat. & Sun. rides try the SFVBC thread on this forum, and their web site which is linked in the first post on the thread. You might also watch for herbm since he rides fairly regularly with a few people from the Burbank area, or jpcpnrad, and merider1 who do some rides during the week in the evenings which have been in the Rose Bowl area (Pasadena night rides thread) since the fire closed down a large part of Griffith Park.