Baseball
Chicago Central MSBL, Chicago Devils, Chicago Lugnuts, Chicago River Bandits, Hyde Park Kenwood Legends Baseball, Skyscraper League
Basketball
AssyrianBBalll, Chicago Blaze, Chicago Tribune: Bulls, Michael Air Jordan, NBA.com: Chicago Bulls, The DL Tournament
Boating
Burnham Park Yacht Club, Chicago Corinthian Yacht Club, Chicago Sailing Club, Chicago Yacht Club, Columbia Yacht Club, MANATRA - Marine Navigation and Training Associati, United Airlines Sailing Club: Chicago Chapter
Cycling
Chicago Critical Mass, Chicago Cycling Club, Chicagoland Bicycle Federation, CUBS - Chicago Urban Bicycling Society, Cycling Sisters, Late Ride, Working Bikes Cooperative, XXX Racing
Fencing
Chicago Athletic Association Fencers Club (CAA-FC), Chicago Fencing Club, University of Chicago Fencing Team
Food and Drink
Chicago Beer Society, Chicago Wine Brats, Chicago Wine School, Chicagoland Beer History, Confrèrie de la Chaîne des Rôtisseurs Bailliage de, Culinary Historians of Chicago, Real Ale Festival, Tastings, Yahoo! Groups: Chicago Wine Club
Football
Chicago Blazer Rugby Club, Chicago Condors Rugby Club, Chicago Falcons, Chicago Lions Rugby Club, Chicago Women's Rugby Football Club, Lincoln Park RFC, South Side Irish RFC
Gaelic
Chicago Erin's Rovers Ladies Gaelic Football , Chicago Padraig Pearse's, Chicago St. Brendan's, Limerick Camogie Club
Games
Bridge Center on Sheridan, The, Chicago ARTCC, Chicago Bar Point Club, Immortal Underground, The
Golf
Big Run Golf Club, CDGA - Chicago District Golf Association, Chicago Golf, Chicago Park District - Golf Facilities, Golf Chicago On-Line
Hockey
Chicago Flash, Chicago Freeze, Chicago Frozen Snappers, Chicago Inferno, Chicago Mission, Chicago Steel, Chicago Wolves
Martial Arts
Kung Fu, Academy of Hwa Rang Do - Chicago, Aikido Association of America, Athena Center of Chicago, Carlson Gracie Team, Chicago Aikikai, Chicago Kendo Dojo, Chung's Tae Kwon Do and Hap Ki Do Institute, Degerberg Academy Martial Arts & Fitness, Inc., H.M.D. Academy Chicago, International Capoeira Angola Foundation: Chicago
Motorcycles
ABATE of Illinois - Chicago Chapter, Chicago Cruisers, Chicago Harley Owners Group (HOG), Chapter 0987, Chicago Norton Owners Club, Chicago Region BMW Owners Association, Greater Chicagoland Valkyrie Club, Motorcycle Riding School, Open Road Riders of Chicagoland, Vulcan Riders and Owners Club (VROC), Windy City C
Running
CARA - Chicago Area Runners Association, Chicago 1/2 Marathon, Chicago Area Dead Runners, Chicago Hash House Harriers, Chicago Lakefront 50K and 50M, Chicago Marathon, Lincoln Park Pacers, RunBig Chicago Clydesdales
Skiing
Chicago Friars Ski & Bike Club, Chicago Metropolitan Ski Council, Chicagoland Over The Hill Gang, CMSC Alpine Racing Program, Grand Prix Ski and Snowboard Club, Lake Shore Ski Club, Lincoln Park Ski Club, Pine Point Ski Club, Snow Hawks Ski Club
Soccer
AYSO Region 418, Chicago Celtic Soccer Club, Chicago Soccer, Chicago United F.C., Royal Wawel Sphinx, Stare Byki FC
Softball
Bears Softball, Chinese Softball League of Chicago, Filipino Softball League of Chicago, The Evil Beavers, USA StrutterS 18 & Under
Trains and Railroads
Arthur C. Gerber - Chicago's Transit Architec, Chicago Electric Railfans Association (CERA), Chicago Transit and Railfan, Chicago Tunnel Company Railroad, National Railway History Society (NRHS), Chicago C, Shore Line Interurban Historical Society
Water Sports
Chicago Kayak Club, Chicago Kitesurfing, Chicago Lifeguard Service, Lincoln Park Boat Club (LPBC), United States Lifesaving Association, Chicago Chap
Chi-Town Sports Den
News and information on Chicago's sports teams. Includes audio broadcasts, Wrigley Field WebCam, multimedia archives, clubs, and chat.
Chicago Audio Society
Forum for audio and music enthusiasts. News, information, events calendar, membership information and mailing lists are featured.
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.
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 E
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.
Michael Amundsen Sports Center
Youth sports center with two locations for girls and boys basketball teams, leagues, and AAU tournaments. Also, features floor hockey, traveling teams, sports and summer camps.
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.