The Coca-Cola Twelve Hours of Sebring, International Grand Prix of Endurance, was the second round of the 1981 IMSA GT Championship and 1981 World Sportscar Championship.[1] The race was held at the Sebring International Raceway, on March 21, 1981. Victory overall went to the Bayside Disposal Racing Porsche 935 driven by Hurley Haywood, Al Holbert, and Bruce Leven.[2][3][4]