I've just returned from a quick jaunt along the Anniversary Trail with the kids and was handed a flyer by a gentleman from the Rotary Club of North Balwyn, stationed at the junction with Whitehorse Road in Deepdene.
The flyer is advertising the "Rotary River Ride" on Sunday 29 October from Hays Paddock (Kew) to Eltham and return. Apparently, they are organising 15km, 30km and 50km rides on the day (sounds kid friendly).
More information at http://www.rotaryriverride.com.au.
I have nothing to do with Rotary Club, so have no axe to grind, but it sounds like fun.