A sanctioning body is the organization that writes and enforces the rulebook for a class or series, licenses tracks and members, sets race procedure, and keeps the official points standings.
Sanctioning bodies run from NASCAR down to regional dirt tours, and the job is the same at every level. IMCA holds sanctioned events in 36 states and one Canadian province, sanctions Modifieds plus seven other divisions, and awards $650,000 in point fund money. USAC issued national sprint car and midget rule updates for its 2026 season. World of Outlaws and DIRTcar publish the rulebooks most dirt racers argue about, the All Star Circuit of Champions is running a 32-race 2026 schedule across five states, and regional outfits like the Short Track Super Series sanction their own tours. Which body governs you decides your legal parts, your tech line, your points, and your provisionals. Plenty of independent Saturday tracks are not sanctioned by anyone — there, house rules are the rulebook.
The sanctioning body decides which parts are legal, how the night is run, and where your points go, so building a car or a schedule without reading their rulebook is how you end up illegal at a track you towed four hours to reach.