The 2015 Speedway Grand Prix was a series of motorcycle speedway racing events held throughout the year. It featured top riders from around the world competing for the title of World Champion. The series included a total of 12 rounds, taking place in various countries, including Poland, Denmark, and Sweden. The championship was won by Greg Hancock, an American rider, who secured his third world title. The event showcased high-speed racing on oval tracks, with riders navigating tight turns and competing for points in each round. The 2015 season highlighted the excitement and skill involved in professional speedway racing.