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Out of 24 participants, six completed the marathon of 328 laps around the track in 45-minute intervals. On August 4, 2014, the park held a 36-hour riding marathon event on the roller coaster as a way for the public to say goodbye to one of the park's staples. Closure and Twisted Colossus announcement ĭuring the 2014 season Six Flags Magic Mountain announced that Colossus would close permanently on August 16, 2014. The train on one side of the track was changed to run backward using the old trains from the now defunct Psyclone roller coaster. On August 29, 2013, Six Flags Magic Mountain announced that they would run Colossus backwards for a limited time during the 2014 season. In 1987, the PTC trains were replaced with trains manufactured by Morgan Manufacturing, and the valley within the double-dip element was leveled off and received block brakes in 1991.ĭuring the Halloween season, the coaster's web-like structure was accompanied by a giant black spider, and the height restriction became 54 inches (1,400 mm).

Also, the original IAD trains were replaced with trains manufactured by Philadelphia Toboggan Company (PTC) during this renovation. The speed hill after the second drop, the double-up element, and several of the ride's other hills were reprofiled. In 1979, the ride closed for approximately ten months to remove excessive negative g-forces. Modifications Ĭolossus underwent a number of changes over the years. It was the tallest and fastest roller coaster in the world, as well as the first to feature two drops over 100 feet (30 m). At a final cost of $7 million, Colossus opened to the public on June 29, 1978. During construction, a tornado caused part of the structure to collapse, but the roller coaster was still completed on schedule. The design was finalized in May 1977, and construction began a few months later in August.

A member of the design team traveled to Mexico City to study Montaña Rusa – the largest wooden roller coaster in the world at the time – in order to help plan for the project. IAD in turn subcontracted Bernard Brothers Construction for the construction of the ride, Continental Consultants for all of the mechanical systems, and Lorenz & Williams for the structural engineering and electronic systems. They hired Ohio-based International Amusement Devices (IAD), who began designing Colossus in January 1977. For its next attraction to debut in 1978, Magic Mountain wanted a wooden roller coaster for the classic "rumble and sway" experience that they felt was missing from steel coasters.