There are rides all year long on Tues, Thrs, and Sat. See the Ride Schedule page for information on when and where these rides take place, especially Thursday rides (which are ad hoc) for Nov – Mar. Note that Thursday rides start from the same location for the entire month, so you need to know what month the ride takes place to know where it starts from.
The first Nov ride will be ….. guess when. (hint: Tues Nov 1).