Thunder Run is a wooden roller coaster at the Kentucky Kingdom amusement park in Louisville, Kentucky. The ride originally operated from August 1990 through to October 2009, when then-operators Six Flags abandoned the park. After remaining closed since 2009, Thunder Run reopened in May 2014 when Kentucky Kingdom reopened under new operators.
The ride was manufactured by Dinn Corporation and designed by Curtis D. Summers and John Fetterman. With 2,850 feet (870 m) of track, Thunder Run stands 90 feet (27 m) tall and features a top speed of 53 miles per hour (85 km/h).