The Flash: Vertical Velocity, Steel roller coaster at Six Flags Discovery Kingdom, Vallejo, California, US.
The Flash: Vertical Velocity is a steel coaster at Six Flags Discovery Kingdom where riders sit in inverted cars that swing downward. Linear induction motors propel passengers along 630 feet of track, accelerating them to 65 miles per hour.
This coaster opened in 2001 at a height of 186 feet but faced Vallejo's height restrictions. The structure was modified in 2002 to comply with local regulations limiting it to 150 feet.
The name references the DC Comics character and connects the ride to a familiar superhero universe that park visitors recognize. This themed attraction sits within the park's broader comic book entertainment zone.
Riders must be between 54 and 75 inches tall to board this attraction. The ride operates with seven cars holding four passengers each, carrying about 28 people per cycle.
The front tower features a twisted spiral design that makes this coaster stand out immediately. The rollback system allows the ride to stop and reverse before fully launching through its course if needed.
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