Forgot who I was supposed to mention this to earlier but the MG Car Club of Canberra are having their first round of Motorkhana this Sunday. Starts from about 9:30am and goes to 3-ish (depending on numbers). They were low in entrants last year, which would result in the cancellation of the event forever. This would be bad as there are very few motorsport events here in Canberra anymore. Their break even point is pretty close to the entrant cap.
Specators are free, just park in the dirt carpark. Can go on passenger rides if you fill out a form. Contact the MG car club of Canberra if you want to enter. No helmet required. Just a road worth car, with rego, can't be noisy.