State Park Speedway is a 1/4 mile asphalt race track in Wausau, WI. Owned by Ron and Scott Wimmer,State Park Speedway offers a fun way to spend Thursday night during the Summer. With ten events planned for the 2011 season fans are sure to see great side by side racing! SPS also has many updated amenities! Come check out the new bar/pavilion area, VIP area, playground, and updated seating.