Tag Dry
Quite some people hike the main pier to pier concrete crowded path in Lamma. Here a bit of everything else that the island can offer.
Kai Kung Leng & Tai To Yan are very picturesque ridges in the Northern part of Hong Kong, really close to the border.
There are tons of different options to be hiking next to the Hong Kong trail, section 5 in this case, but completely out of the crowd. This is one of them, with a bit of adventure.
Going up to Ngau Ngak Shan, also known as the Hunch Backs, the rough way. Beautiful views to both Sai Kung and Ma On Shan.