Big O Speedway (FKA 85 Speedway) Submit new listing Favourites Print listing Save as PDF Add bookmark Big O Speedway (FKA 85 Speedway) The RosterMotorsportsTracksBig O Speedway (FKA 85 Speedway) Track ShapeOval Track Legnth1/4 mile Surface TypeClay AddressTrack Address: 3118 FM 85 Ennis, TX 75119, Texas, USA 75119CategoriesTracksContact InformationWebsitehttp://www.racingin.com/news/Details.aspx?Event_ID=1387