The most convenient way to reach the starting point of the Monkey Trail is to walk to the end of Ao Nang Beach (not towards Nopparathara Beach in the other direction). You will see a stone bridge and a few meters further on a wooden footbridge with an instruction sign reminding you that you are entering a national park, do not feed the monkeys, bring food or drink and do not smoke. Very quickly the path begins to rise with stairs to climb then a steep path and other stairs before descending to Pai Plong Beach, an isolated beach, only accessible by this path or by the sea.
When you arrive on the beach, a ranger will ask you to write your name and time of arrival in the register (you will have to mark your time of departure there). Here, fewer people than on the beach of Ao Nang. There is also a resort, the Centara Grand Beach Club whose staff come and go from work via the Monkey Trail. I was there between 7am and 8am, I didn't see any tourists but a lot of Centara employees. On the beach, you can rent kayaks from the hotel and explore the surroundings by paddling. Many find this beach more pleasant than that of Ao Nang. And the trail to get there is not so difficult. At normal pace, I took around a quarter of an hour to twenty minutes to connect Ao Nang to Pai Plong beach. The Monkey Trail is 700 meters long.