The teenager was in the parking lot at Clyde Martin Memorial Speedway in Heidelberg Township during a race when the assault took place between 7:20 and 9 p.m. on Sunday, July 3, she told authorities.
State police were informed of the assault on July 21, according to the release.
The investigation is ongoing, but no suspects have been identified.
Anyone with information is asked to call the state police in Jonestown at 717-865-2194.
Click here to follow Daily Voice Bristol and receive free news updates.