410 outlaw sprint cars & IMCA modifieds race April 24, 2020 at Park Jefferson Speedway, 48426 332nd Street, North Sioux City, SD 57049
Phone: 712-202-5540 adam@parkjeff.com

Free air density hourly forecast for tuning; historical, metric, DA, AD, water grains; site Map location
https://airdensityonline.com/track-results/Park_Jefferson_Speedway/