Harrington Raceway & Casino is a harness racing track and casino located on the fairgrounds of the Delaware State Fair, just south of Harrington, Delaware. . Read more. Other · From the Business. Get details about Harrington Raceway & Casino in our Kent County and explore attractions, places to stay, dining, events, music and more with Visit Delaware. Map · S Dupont Hwy. Specialties. Harrington, DE Directions · () Call Now · Known For. Please know that all games are regulated by the Delaware State Lottery. Midway Slots & Simulcast · Map · 15 W Rider Rd. Harrington Raceway & Casino is a harness racing track and casino (a "racino") located on the fairgrounds of the Delaware State Fair, just south of. Harrington, DE Directions · () Call Now · More Info. This Kent County, Delaware casino has delectable dining options, live. Harrington Raceway & Casino · Page · Casino · () · [HOST] The Harrington Casino is where winners play! Enjoy over hot playing slot machines, dine in an award winning restaurants, make a bet on a profootball. Harrington Raceway & Casino is one of the most beloved gambling casinos in Delaware. We sincerely appreciate your business and wish you better luck in the future. Other. Hours · Known For. Here at your favorite Delaware casino, we offer shuttle services, catering, sports betting, and Live On Stage featuring Delaware's best complimentary live.