There is a sample of what you could do in 1 day walking around Sydney.
The itinerary is quite packed, but designed so you can pick and choose what you would like to do and see. You can do everything or go at your own pace.
Fitness level: moderate
Cost: low
Time: 12 hours or less, optional sections.
Weather dependent: Yes, lucky Sydney weather is generally temperate. A wet weather alternative is coming!