So looking at a map, Unwin Ave. from Polson around to the end of the spit, which I think is paved... Could run the whole thing out of the Docks, leaving most of Cherry open if we didn't use Commissioners. The parks could be set up with tents and there is even a helipad nearby for emergencies. Spectators could be all over the place, and people could bring boats around to watch as well. Maybe do it over two days and end the day with an SS bike trial.
With the airport there, we could have done an air race around the island as well, but commercial flights would break that, maybe over the water out past the beaches and back, we could have a Toronto Festival of Speed...