Allabout…
All the big rides I've done are organised through Bike SA - they organise registration, refreshment stops, SAG wagons etc They charge an entry fee to cover costs which includes insurance. I became a member in January and they let me know via email and quarterly magazine what's happening, including all the regular rides organised by local clubs. Haven't gone there yet, as they're mostly about speed, and I'm a bit of a tortoise. I think Bicycle NSW organised the Tour de Hills (www.bicyclensw.org.au); I'm guessing that's where most of the New South Wales ride information will be collated.