Despite its five million-strong population, Sydney is home to a number of secluded beaches. But Resolute Beach takes isolation and wildness to the next level. That's because the only way to reach it is by taking on the six-kilometre Resolute Loop Track, which turns off many a lazy beach-goer. Those with the stamina to handle it are, however, amply rewarded with an unspoiled, empty stretch of sand that's surrounded by Ku-Ring-Gai National Park and affords uninterrupted views over Pittwater.