Korea is about seventy percent mountains, and almost none of them are big. That combination is unusual, and it is the single most useful thing to understand before you plan a hiking day here. You do not need a permit, a hut booking, an early alpine start or a week of acclimatisation. In Seoul and Busan you can leave your hotel after breakfast, take the subway to a trailhead, walk for four to six hours, and be back in the city for dinner.
The mountains are low, and that is the point
Visitors often assume Korean hiking means something like the Alps or the Rockies. It does not. The peaks that dominate Seoul and Busan are a few hundred metres high, and the tallest mountain in mainland South Korea, Jirisan, is under 1,916 m.
| Mountain | City | Height | Typical round trip |
|---|---|---|---|
| Bukhansan (Baegundae) | Seoul | 836 m | 4–6 hours |
| Gwanaksan | Seoul | 632 m | 4–5 hours |
| Inwangsan | Seoul | 338 m | 2–3 hours |
| Namsan | Seoul | 270 m | 1–2 hours |
| Geumjeongsan (Godangbong) | Busan | 801 m | 4–6 hours |
| Jangsan | Busan | 634 m | 3–5 hours |
| Hwangnyeongsan | Busan | 427 m | 2–3 hours |
Low elevation changes everything about how a hike fits into a trip. There is no altitude to worry about. There is no weather window to wait for. Nothing needs to be booked. A hike stops being an expedition and becomes something you can slot into a spare day — which is exactly why it works so well for visitors who are in Korea for something else.
Trails start at subway stations
This is the second thing that surprises people. Korean cities were built around their mountains rather than pushing them to the outskirts, so the trailheads are inside the transport network. In Seoul, Bukhansan National Park is reachable on public transport from the centre. Inwangsan starts a short walk from Dongnimmun station. Namsan begins in the middle of the city. In Busan, Geumjeongsan is served by the subway to Oncheonjang, and Jangsan sits directly behind the Haeundae beach district.
You will not need a car, a taxi transfer or a tour booking to reach any of the hikes described on this site.
Koreans often walk around the mountain, not up it
Here is the part that no guidebook explains properly. A very large share of Korean trail walking is not summit-focused at all. Instead of climbing to the top and coming back down, people follow a route that contours around the mountain at a more or less constant height, or traces a coastline, or follows an old city wall. These are called dulle-gil (둘레길) — literally “circumference paths”.
A dulle-gil is not a lesser version of a “real” hike. It is a different activity with different rewards. The gradient stays gentle, the route passes through villages, temples and neighbourhoods rather than avoiding them, and you can join or leave at almost any point because the path keeps meeting roads and bus stops. For someone with one free day, unfamiliar terrain and no desire to commit to a summit, it is often the better choice.
Three of these routes matter most to visitors:
- Galmaetgil (갈맷길) in Busan — a coastal network of around 278 km, divided into nine numbered courses and further split into shorter sections. Much of it is flat, sea-level walking between beaches, headlands and fishing villages.
- The Seoul City Wall Trail (한양도성길, Hanyangdoseong-gil) — an 18.6 km loop following the Joseon-era city wall over four small mountains and through the middle of the old city. It is the clearest single introduction to how Seoul is laid out.
- Bukhansan Dulle-gil — a 71 km ring around the base of Bukhansan, for people who want the national park scenery without the granite scrambling at the top.
Choosing between a summit and a dulle-gil
| Summit route | Dulle-gil | |
|---|---|---|
| Gradient | Sustained climbing, often with rock sections and handrails near the top | Gentle and rolling; long flat stretches |
| Commitment | Fixed — you go up and come back | Flexible — exit at any road crossing |
| Typical time | 4–6 hours | 2–4 hours per section, as many as you like |
| Footwear | Proper hiking shoes with grip | Trainers are usually fine |
| Reward | A view over the whole city | Villages, coastline, temples, everyday life |
| Good for | A full day set aside for hiking | Half a day, recovery days, mixed plans |
When to go
Spring, roughly April to May, and autumn, roughly late September to early November, are the two obvious seasons. The air is clear, the temperature is comfortable and the autumn colour on the ridges is the reason many Koreans hike at all.
Summer is hot and humid, and the monsoon arrives around late June or July. Coastal Galmaetgil sections handle summer better than inland ridges because there is sea breeze and shade. Winter hiking is entirely normal here and the trails stay busy, but ridges become icy and crampons are commonly used on Bukhansan and Gwanaksan.
One practical detail that catches visitors out: Korean national parks close sections at dusk and enforce it. Check the seasonal entry cut-off before you start a late-afternoon climb.
What to bring
- Shoes with grip. Korean trails are granite and tree root, and both are slick when damp.
- Water. There are shops at most trailheads but rarely on the mountain.
- A transport card. It works on subways, buses and in convenience stores, and every hike here starts with one.
- Layers. Ridges are noticeably colder and windier than the street you left an hour ago.
- Cash is optional; card payment works almost everywhere, including small mountain-village restaurants.
You do not need poles, a pack of any size, or technical clothing. You will see Korean hikers in full alpine kit for a 300 m hill — that is a cultural habit, not a requirement.
Fitting a hike around other plans
Many visitors are in Korea for a specific reason — a clinic appointment, a conference, family — with days either side that are not yet spoken for. A four-hour hike reachable by subway fits that shape of trip better than almost anything else, and a dulle-gil section fits it even better because you can decide how far to go once you are already walking.
If you are recovering from a procedure, the relevant variables are gradient, sun exposure, sweating and time on your feet — all of which differ sharply between a summit route and a flat coastal section. Those are questions for your clinic, not for a travel guide, but it is worth knowing that both options exist and that the easier one is not a consolation prize.
Where to go next
- What a dulle-gil actually is — the format explained in full
- Galmaetgil, Busan’s coastal trail
- Day hikes in Seoul
- The Seoul City Wall Trail
In an emergency
Korea has two emergency numbers, and both answer in English.
- 119 — fire, rescue and ambulance. This is the one to call for an injury on a trail.
- 112 — police.
Korean trails carry numbered rescue markers — small posts with a code on them. Reading that code to the operator locates you far faster than describing the scenery. Note the last one you passed.
Mobile coverage is good on almost all the routes described here, including the ridges.
Trail conditions, park opening hours and seasonal closures change. Check the managing authority’s current notice before you set out, and treat the times given here as planning estimates rather than guarantees.
Closures are the thing worth checking
Korean trails close, and not only for weather. National park ridgelines shut during the spring and autumn fire-risk periods, coastal sections close for construction or erosion, and some routes run on fixed opening hours rather than dawn to dusk. These are published by the managing authority and almost never by the blogs describing the walk.
Distances and difficulty ratings are worth taking from the official course data too. The national walking trail portal publishes track files and an assigned difficulty grade, which is a steadier basis for planning a day than someone else’s impression of how hard it felt.