Overview
Daecheongbong (대청봉), at 1,708 m, is the highest peak in Mt. Seorak and the third-highest mountain in South Korea. From the summit you see the East Sea on one side and ridge after ridge of granite on the other.
The Osaek route is the shortest way up, but shortest does not mean easy. You climb about 1,300 m in 5 km, through dense forest, rocky slopes, and finally open alpine ground near the top. This is a full mountain day — plan 8–10 hours up and back.
The Route
Distances and times are the Korea National Park Service's signposted figures for the climb.
Namseorak Information Center → Seorak Waterfall area (2.5 km, ~2h): The trail starts at the Namseorak Information Center (남설악탐방지원센터) in Osaek village and climbs from the first step: stone stairs and rock steps through mixed forest beside a stream. Seorak Waterfall (설악폭포) is a good rest on this lower half.
Seorak Waterfall area → Daecheongbong (2.5 km, ~2h): The upper half is steeper still. Long stretches of boulder-strewn ground and stairs lead out of the trees into low alpine scrub, and the last section to the top is open to the wind. Keep rain gear and a warm layer where you can reach them.
Daecheongbong (1,708 m): A stone summit marker and the whole range spread out below. In clear weather you can follow the ridges all the way to the coast.
The chart above shows where the stairs and the rocky stretches are, from the national trail survey.
What to Expect
This trail demands respect. The rocky upper half needs careful footwork, especially on the way down, when tired legs on loose rock cause most injuries. The top is fully exposed to wind and changes weather quickly.
It is also a maintained, signposted trail that thousands of Korean hikers climb every year. What it takes is fitness, preparation, and an early start.
Take the descent slowly, especially the steps below Seorak Waterfall, which stay wet and slick. Poles take most of the load off your knees.
How to Get There
Bus: Intercity buses between Sokcho and Yangyang or Inje stop in Osaek (오색) several times a day; ask for Osaek when you buy the ticket and check the return times before you start.
Car: Osaek is about 40 minutes from Sokcho, south toward Yangyang and then west on Route 44. There is paid parking in the village near the trailhead.
No Reservation — but Watch the Clock
You do not need a booking to climb Daecheongbong. What you do need:
- An early start. The trailhead has a latest-entry time, posted on the sign. Starting at dawn keeps you clear of it and off the summit before afternoon storms.
- An open trail. The high country closes for fire prevention every spring and autumn (in 2026, March 4–May 15 and November 15–December 15) and on days of severe weather. Check the KNPS notices the evening before.
- A plan for the night, if you want one. Only the shelters take bookings — see the Daecheongbong Overnight guide.
When to Go
June: Alpine wildflowers and long daylight. Snow is usually gone from the upper trail.
Late September–October: Peak autumn color, starting at the summit in late September and moving downhill. The most beautiful and the most crowded.
Mid-November–mid-December and early March–mid-May: Closed for fire prevention.
Winter: Only with winter mountaineering experience and crampons.
Start by 6 AM. Summer afternoons bring thunderstorms to the upper trail; aim to be on the summit by late morning and below the exposed ground by early afternoon.