The 1977 Dutch TT was the eighth round of the 1977 Grand Prix motorcycle racing season. It took place on 25 June 1977 at the Circuit van Drenthe Assen. Wil Hartog became the first Dutchman to win a 500cc Grand Prix when he claimed the victory. 500cc classification 350 cc classification 250 cc classification 125 cc classification 50 cc classification Sidecar classification References Dutch TT Dutch Tourist Trophy