Antioch Speedway is located at the Contra Costa County Fairgrounds in Antioch, CA. Physical Address: 1201 W. 10th Street Antioch, CA 94509 Mailing Address: Antioch Speedway P.O. Box 4575 Antioch, CA 94531-4575 Speedway Office: (925) 779-9220 Fax: (925) 779-9213 Directions: View Larger Map Download article as PDF
