Travel Six Flags Great Adventure record-breaking roller coaster with 87-degree drop on track to open in 2021 January 29, 2021January 31, 2021 Alex Biese, Asbury Park Press Comments Off on Six Flags Great Adventure record-breaking roller coaster with 87-degree drop on track to open in 2021 The world's tallest, fastest and longest single-rail coaster's track is in place at Six Flags Great Adventure in Jackson, New Jersey.