One of my absolute favourite trails in terms of views is definitely MacLehose trail 2. I’ve always done it on opposite way, starting from Pak Tam Au (where you can get either with a taxi or green mini bus from Sai Kung Town). The trail offers already in the beginning some great views, then goes down to the coast, before climbing a bit again, until reaching the first of the amazing beaches at Ham Tin. At Ham Tin there is a small restaurant offering some great and affordable food. After Ham Tin, there is some more climbing, before reaching the next beach at Sai Wan where you can also either continue further or take a boat ride back to Sai Kung Town. If you finish here, you would have walked roughly 8km.