3 hours by car, or 45 minutes by plane.
Sydney, Melbourne and Canberra are all major cities in Australia.
In Australia, Canberra and Sydney are the two closest capital cities.
288km
Sydney and Canberra
Sydney Canberra
Yes, Australia has many cities. See the related question.
Sydney was the first city in Australia, and is now the largest city. It is not, however, the capital city of Australia as that is Canberra.
Sydney was never the capital of Australia; Canberra is the political capital of Australia, and Sydney is the capital of the state of New South Wales.
Sydney is the state capital of New South Wales, Australia. Canberra is the capital city of Australia.
By rail, the Sydney to Canberra trip is 270 kilometres and takes just over 4 hours.
The air distance -- within Australia -- from Sydney to Canberra is 154 miles. That equals 247 kilometers or 134 nautical miles.
Out of Australia's capital cities, Canberra and Sydney are closest to each other.