Korea has an enormous number of mountains — nearly 70% of the country is mountainous terrain. And Seoul, despite being one of the biggest, densest cities in the world, is somehow still surrounded by them.
That combination is rare. Most massive cities either don’t have real mountains nearby, or you need a car and half a day to reach one. In Seoul, you really don’t.
You Can Just… Take the Subway
There’s no single “right” station for most of these mountains — Bukhansan alone has multiple entrances, each reachable by a different subway stop. But the point stands: you’re not renting a car or planning a day trip. You get on the subway like you’re heading to work, and forty minutes later you’re on a trail.
Not Every Mountain Hits the Same
Bukhansan is the classic — Seoul’s biggest, most popular mountain, with multiple trails and entrances, and its own long-established hiking culture around it.
Achasan is a completely different proposition. It’s lower and more beginner-friendly, with trails that are easy to fit into a normal day in Seoul.
And then there’s Gwanaksan, which has had a real moment with Korea’s younger generation lately — enough that “Gwanaksan opening run” (관악산 오픈런) became an actual phrase, people showing up before sunrise on weekends the same way they’d line up for a limited sneaker drop, except the thing they’re queuing for is a mountain.
The reason is oddly specific: a fortune-teller on a TV variety show once said that if things aren’t going your way, visiting Yeonjudae — the peak at Gwanaksan’s summit — might turn your luck around. The clip spread on social media, and it snowballed from there: 20-somethings heading up before job interviews or exams, posting proof-of-visit photos. In traditional Korean geomancy, Gwanaksan is also known as a “fire mountain,” which only added to the mystique.
It’s a very Korean combination: a mountain, a little superstition, social media, and an excuse to get out of bed early on a weekend.
What Happens After You Come Down
Near most popular trailheads, there’s a strip of restaurants doing some version of the same thing: pajeon (savory pancakes), makgeolli (rice wine), and something warm and simple to go with it — dotorimuk (acorn jelly), tofu, a hot stew, depending on where you end up.
Drinking is technically banned on the trails themselves, so this is where that part of the day actually happens. A lot of hikers plan around it as much as the hike itself.
Seoul is one of the most exciting cities in the world — but it’s also, somehow, one of the most peaceful, if you know where to look. You came for the shopping, the food, the chaos of it all. Consider spending one morning doing the opposite: a quiet trail, twenty minutes from wherever you’re staying, before the city wakes back up.
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