"If you own a Solstice and you don't belong to a Solstice Club, you just own a car"
Just an example, the San Diego Miata Club is a pretty diverse group, with driving schools, suspension seminars, dyno tuning, autocross, track days, auto shows, parades, and Miata drives galore. Here is a list (probably incomplete) of their events for last year.
01/01 5th Annual Hangover Run
01/15 Olympic Torch Relay
01/05 Laguna Seca Track Day
01/19-20 Autocross at the Q
01/24 Monthly Meeting
01/25-26 Las Vegas Getaway
01/26 Autocross at the Q
02/05 Laguna Seca Track Day
02/13-18 San Diego International Auto Show
02/16 Track Driving Techniques, Suspension & Driving Seminars
02/24 There's Something Fishy About This Run II
02/26 Monthly Meeting
03/2-3 Autocross at the Q
03/15-17 National Tour Autocross Championship at the Q
03/16 Sahuaro Miata Club Second Annual Miata Roundup Car Show
03/16 San Joaquin Valley Miata Club's 8th Annual Saint Patrick's Day Poker Run
03/17 Impromptu Run
03/23 Puke-O-Rama
03/25 Laguna Seca Track Day
03/25 Laguna Seca Track Day
03/28 Monthly Meeting
03/30 Tech Day in Ramona
04/05 Cruzin' Grand Wheels'N'Meals
04/6-7 Autocross at the Q
04/06 Desert Blooms Run
04/13 One Lap of America
04/20 Dam Run 4 "Revenge of the Cheese"
04/21 Autocross at the Q
04/25 Monthly Meeting
04/26-29 Western Sierras 2
04/28 Autocross at the Q
04/27 SDMC Annual Membership Meeting
03/03 Cruzin' Grand Wheels'N'Meals
05/4-6 Search for Madonna
05/4-6 McKeever's Fast Lane Racing School
05/11-12 Autocross at the Q
05/11 SDAM 3rd Annual Car Club Car Show
05/18 Impromptu Run
05/19 Impromptu Run
05/23 Monthly Meeting
05/25 Autocross at the Q
06/07 Cruzin' Grand Wheels'N'Meals
06/08 Track Driving Seminar
06/09 Tech Day in Oceanside
06/22 Impromptu Run
06/23 impromptu Run
06/27 Monthly Meeting
07/30 Ice Cream Social & Parade Planning Party
07/04 Scripps Ranch 4th of July Parade
07/04 4th of July BBQ & Pool Party & Fireworks
07/05 Cruzin' Grand Wheels'N'Meals
07/06 Autocross at the Q
07/13 Brainstorm Tech Day in San Diago II
07/19-21 Weekend with the Sahuaro Miata Club
07/25 Monthly Meeting
07/27 8th Annual Twilight Run
08/02 Cruzin' Grand Wheels'N'Meals
08/03 Dyno Tuning at Team Godspeed
08/10 6th Annual Miles of the Miatas for MDA
08/16-18 Monterey Historic Automobile Races
08/17 Run to the Getty Museum
08/22 Monthly Meeting
08/24 Debbye Does Santee Drive-In
08/31 Luau Run to the Lewis'
09/08 Autocross at the Q
09/14 SOCALM Best of the Bunch III All Miata Amateur Car Show
09/26 Monthly Meeting
10/8-10 3rd Bi-Annual Hearst Castle/San Simeon Run
10/10 20 Questions
10/12-13 Coronado Classic Speed Festival
10/19 Edelbrock Tour
10/20 Autocross at the Q
10/24 Monthly Meeting
11/09 Slot of Fun Run II
11/11 Veterans Day Parade
11/21 Monthly Meeting
11/30 Autocross at the Q
12/01 San Marcos Holiday Parade
12/1-2 Thunder Hill Track Day & Women's Track School
12/07 Autocross Novice School
12/07 Toys for Tots Run
12/15 SDMC Holiday Party
12/19 Monthly Meeting