| 10pin Bowling Lounge: Billed as an upscale bowling center, with lounge, video wall and sound. Lists rates, small plates menu, party package details, and special events. |
| Chicago Audio Society: Forum for audio and music enthusiasts. News, information, events calendar, membership information and mailing lists are featured. |
| Chicago Flight Training.com: A training school specializing in accelerated training programs for private pilot, instrument pilot, commercial pilot and certified flight instructor licenses and ratings. |
| Chicago Mountaineering Club: Climbing club. Membership information. Schedule of upcoming events. Photos from Mount Rainier, Washington; and Long's Peak, Colorado. |
| Chicago Sun Club (CSC): Traveling group for nude recreation. Members of the Midwest Sunbathing Association (MSA). Details on activities, membership information, and related links. |
| Chitown Sirens Roller Derby: News and events postings. |
| City Pool Hall in Chicago: A host for BCA and APA billiards leagues. Presently hosting APA, BCA and the Camel Shootout. |
| Creative & Production Resources, Inc. (CAPRI Events): Event-marketing and management company producing participatory special events, such as multi-sport, triathlon, runs and walks. Site features participants results, event hotlines, registration, links and contacts. |
| Inland Cigar Smokers Club: A cigar club offering information and reviews, discussion board, social events and links. |
| Lincoln Park Lacrosse Club: Offers news, club history, current and past schedules, team rosters, sponsorship opportunities, and lacrosse links. |
| Northern Illinois Tactical Shooting Club (NITac): Private shooting organization that specializes in tactical and combat scenarios for civilian, law enforcement, and military personnel. Features weekly shoots and NRA certified instructors are available for personal and group instruction. |
| Sport and Social Club: Company that organizes fun social events, and recreational sports leagues for adults in major metropolitan areas throughout the United States, such as Chicago and San Francisco. |
| Sports Monster: Adult recreational sports league organization. Welcomes individuals and teams to play in almost any team sport. Includes schedules, locations, and details of its offerings. |
| Waveland Bowl: A 24-hour, 365 days per year bowling center featuring adult and youth league information, hours of operation, glow-in-the-dark bowling, private parties and a pro shop. |
| Windy City Rollers: All-female flat-track roller derby league. Includes league and team information, news, events, photographs, and related links. |
Classical
