Wonderland quickly became the premier greyhound racing venue in the Northern United States. Greyhound racing was conducted at two additional tracks in Southeastern Massachusetts at Taunton and Raynham, but the crowds and nightly handle at Wonderland substantially exceeded the handle at the other Massachusetts tracks. Wonderland was known throughout the industry for hosting the premier greyhound championship greyhound race each August, "The Wonderland Derby". This race, which ended in 1988, often drew in excess of 30,000 fans. Seabrook Greyhound Park (now closed) opened in 1970 and as it was about 40 miles from Wonderland, offered competition, including its own race "The Great Greyhound Race", which featured championship dogs from Wonderland and Seabrook running stakes races. Most Boston area television stations carried video of the winners of the first two (Daily Double) races each evening and the video results of any stakes race.