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