Although new ideas are most welcome, there are only so many places to go and your ride will be appreciated even if it has been done many times before. Although not compulsory, a ride may be more enjoyable if it has a clear destination, halfway stop or focus point. Whilst this has traditionally been a cafe or similar on most rides to date, it could be anything at all- a geographical feature, cultural event, notable building or park. A good starting point is to check a map of the route you are thinking of riding. Within Canberra, the Canberra Cycleways map is the best available map for cycling.
Street directories can also be useful.
Outside of Canberra there are a range of regional maps available. Knowing, for example, just exactly where a particular kerb ramp, median strip or underpass is can be invaluable on the day. Note the distance for the calendar entry and the time it should take, with stops, so you can tell people who will ask before the ride. The easier, flatter and shorter your ride is, the more likely it is to attract inexperienced riders. This is not always possible, and a few unavoidable hazards should not completely scuttle your plans to follow a particular route if caution is exercised.