Associations and Organizations

• Birmingham (Alabama) Racing Commission
• California Thoroughbred Breeders Association
• The Jockey Club
• The Jockey's Room
• Louisville Thoroughbred Club
• New York Breeding & Racing Program
• New York Racing Association
• The Thoroughbred Owners and Breeders Association
• Texas Thoroughbred Association
• Bloodstock Research Information Services (BRIS)

Farms and Stables

• Applebite Farms, California
• Arrowfield Stud, Australia
• Ashford Stud, Kentucky
• Crocker Racing Stable
• Glencrest Farm, Kentucky
• Harris Farms, California
• Lane's End Farm, Kentucky
• Mare Haven Farm, Kentucky
• Neversweat Thoroughbreds, Oklahoma
• Old Frankfort Stud, Kentucky
• Prestonwood Farm, Kentucky
• Swatara Farm, Pennsylvania
• Three Chimneys Farm, Kentucky
• Vinery, Kentucky

General

• Barn to Wire Illinois racing news
• Horse Racing Around the World
• Horse Racing HQ
• Horse Racing Videos Online
• Horsesales.com Race horses for sale
• Mardi Gras Race Bridles
• Thoroughbred Bloggers Alliance
• ThoroughbredCentral.com
• Thoroughbred Diaries
• Unofficial Guide to Pimlico Race Track

Handicapping

• AllHorseRacing.com
• Australian Horse Betting Site
• Australian Horse Racing Entertainment Program
• Gamblers Book Club
• Pro Group Racing Thoroughbred horse racing tipping service in Australia
• RaceHorseOwner.com Virtual Horse Racing site  

Horses

• The Official Site of Cigar
• Pharlap Homepage

International Racing

• Australian Horse Racing Site 
• British Horseracing Board
• The Greenacres Stables, Ireland
• Hong Kong Racing Journal
• Irish-Horses.com
• New Zealand Racing Industry Board
• New Zealand Thoroughbred Breeders' Association
• Oz Horse Racing : A-Z of Australian Horse Racing and Breeding
• Pro Group Racing Thoroughbred horse racing tipping service in Australia
• The Rathmoy Stables, England

International Racetracks

• Aintree Racecourse, United Kingdom
• Ascot Racecourse, United Kingdom

North American Racing

• The Breeders' Cup
• Post Call Stable
• The Running Horse

North American Racetracks

• Aqueduct, New York
• Arlington International Racecourse, Illinois
• Bay Meadows Racetrack, California
• Belmont Park, New York
• Calder Race Course, Florida
• Canterbury Park, Minnesota
• Churchill Downs, Kentucky
• Del Mar, California
• Delaware Park, Delaware
• Dover Downs, Delaware
• Emerald Downs, Washington
• Fairmount Park, Illinois
• Golden Gate Fields, California
• Gulfstream Park, Florida
• Hollywood Park,California
• Keeneland, Kentucky
• Laurel Park, Maryland
• Louisiana Downs, Louisiana
• Monmouth Park, New Jersey
• Penn National, Pennsylvania
• Philadelphia Park, Pennsylvania
• Pimlico Racetrack, Maryland
• Portland Meadows, Oregon
• Oaklawn Park, Arkansas
• Sam Houston Race Park, Texas
• Santa Anita, California
• Saratoga, New York
• Tampa Bay Downs, Florida
• Thistledown, Ohio
• Turf Paradise, Arizona
• Turfway Park, Kentucky
• Windsor Raceway, Ontario, Canada
• Wyoming Downs, Wyoming

Publications

• The Blood-Horse
• Daily Racing Form
• Equibase Company
• Racing Post Online
• The Thoroughbred Times