Walking or running over the Sydney Harbour Bridge is one of the ‘must-dos’ in Sydney. There are great views of the harbour, and a decent pedestrian path for the 1+ km crossing. Once in North Sydney, there’s another 3 km of lovely running along paths around Lavender Bay, with great views of the bridge, downtown Sydney, and the harbour. A longer run is an out and back, and for a shorter run, take the subway or ferry back from North Sydney.
One can start at any point downtown, but a good spot is the Sydney Observatory, where there’s a path leading to the bridge. Get onto the bridge path, which is on the eastern side of the bridge. Cross the bridge, enjoying the great views from the 87m high Pylon Point. Once in North Sydney, exit the bridge path onto Broughton St., and head back toward the water on the eastern side of the bridge, to enjoy the Broughton St. and Mary’s Booth lookouts. Then, take the waterfront path under the bridge to Milson’s Point, and run along the path through Luna Park, continuing on the Peter Kingston Walkway. The do a quick jaunt through Watt Park and Wendy Whiteley’s Secret Garden. For the return, either run back over the bridge to downtown, or use transport (ferry or subway from North Sydney or Milsons Point).
Add-Ons: Can explore the pleasant (and hilly) in the affluent Kirribilli neighborhood (east of the bridge), or McMahons Point down to Blues Point Reserve.