On Friday & Saturday, October 2 & 3, Boulder Parks & Recreation sells annual passes at a discount. An individual annual pass is $499 for residents and $599 for non-residents (regularly $552 and $645). It is valid for gym, pool, drop-in classes at the North, East and South centers. A family annual pass for families of 4 or more is $799 for residents and $999 for non-residents (regularly $885 and $1,075). In addition to the three rec centers, the family pass includes unlimited season access to the city’s two outdoor pools and to Boulder Reservoir. You can register in person at any of the rec centers or online.