Park Jefferson Speedway is a dirt racetrack based on the north side of
Sioux City, Iowa. Park Jefferson rose to prominence as one of the top
racing facilities in the area, featuring Super Late Models and also
touring specials with Outlaw Sprint Cars from the NCRA. Park Jefferson
Speedway is home to weekly IMCA Racing featuring 6 classes of IMCA Race
Cars each and every Saturday spring, summer and fall. In addition, Park
Jefferson hosts Championship Sprint Cars, Super Late Models and ...