For scenery and a bit of a challenge, the Igidae Coastal Walk is a must do in Busan. A coastal trail located a couple of miles south of Gwangalli Beach, the Igidae Coastal Walk is a path following the coast for 4.7 km from Igidae Dongsaengmal to Oryukdo Sunrise Park. At Oryukdo, there’s a ‘skywalk’, which is a popular attraction for its walkway with great views. Among the attractions along the way is a great view from Diamond Bridge. There’s a map of the trails at the path’s entrance.
The trail itself is a combination of gentler pavement and dirt path, with some steeper sections and lots of stairs near the Oryukdo Skywalk hill section. As an alternative (or for a good loop option), the interior Forest Walkway trail goes for 2 km, and is more of a challenging trail run.