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Wake Posts's answer to What is the tallest roller coaster in the world? - Quora
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Wake Posts's answer to What is the tallest roller coaster in the world? - Quora

Wake Posts's answer: The current record holder for the world's tallest roller coaster is the Kingda Ka, located at Six Flags Great Adventure amusement park in Jackson, New Jersey, USA. It stands at a towering height of 456 feet (139 meters)