HangTime is a steel roller coaster at Knott's Berry Farm in Buena Park, California. The Infinity Coaster was manufactured by Gerstlauer on the former site of Boomerang and Riptide. On opening, it had the steepest drop on a rollercoaster in California, at 96°.

The iconic Boomerang roller coaster at Knott's Berry Farm, which closed in April 2017, was officially replaced by HangTime, a steel "Infinity Coaster" manufactured by Gerstlauer. HangTime opened in May 2018 and has since become the centerpiece of "The Boardwalk" area of the park. It is a significant upgrade from the old Boomerang, featuring a 150-foot vertical lift hill and a 96-degree first drop, which was the steepest in California upon its debut. The ride is famous for its "holding" mechanism at the top, where the train dangles over the edge for several seconds before plunging. In 2026, HangTime remains a grounded favorite for thrill-seekers, especially at night when its sophisticated KCL Engineering LED lighting system provides a spectacular synchronized show across the track. While many fans miss the nostalgia of the Boomerang's shuttle-style loop, the addition of HangTime brought a world-class, multi-inversion thrill to Knott's that utilizes the space much more efficiently for modern guest expectations.