ATTENTION FANS: NO VACCINE PASSPORT REQUIRED FOR OUTDOOR GRANDSTAND SEATING.

Series Rules

View or download the official rulebooks for the racing series at Humberstone Speedway.

DIRTcar 358 Modifieds

View or download the rule book for the DIRTcar 358 Modifieds.

DIRTcar Sportsman

View or download the rule book for the DIRTcar Sportsman.

Thunderstocks

View or download the rule book for the Thunderstocks.

Mini Stocks

View or download the rule book for the Mini Stocks

NOTES:

Humberstone Speedway Thunder Stock and Mini Stock divisions compete under the Ontario Dirt Competition Committee Rule Books. For more information visit www.ontariodirtcomp.com

Humberstone Speedway Thunder Stocks and Mini Stocks divisions also participate in the Duel on the Dirt Series. For more information visit www.duelonthedirt.com

ATTENTION FANS: NO VACCINE PASSPORT REQUIRED FOR OUTDOOR GRANDSTAND SEATING.