If you ever find yourself in Busan, Korea, and you love day hikes, I recommend this trail. It's quite a strenuous hike. I do not know how long it takes to complete because I haven't finished in one sitting; I can only guess it takes about 2-3 hours depending on your fitness level. And ensure to bring water and a snack.
There are three ways you can join this trail.
From the south end, you can join this trail from the south end, Oryukdo (오륙도). This is where the famous Haeparang-gil (해파랑길) starts from. This is the easiest entry point using city buses. Buses stop at this very Oryukdo (오륙도) bus stop.
From the north end - From Dongsaengmal (동생말). I prefer to start from this end because you almost immediately see the stunning view of Busan's coastline. Use city buses that go to Yigidae Park Entrance (이기대공원 입구) and walk about a mile up the hill.
From the middle, walking up the hill and through Yigidae Park. Use city buses that go to Yigidae Park Entrance 이기대공원 입구 and walk about less than a mile up the hill.