Mountain ridges in Seoraksan National Park seen from the Bongjeongam viewpoint, with trail information boards in the foreground
Bongjeongam, Seoraksan · Nov 2024

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A temple complex in a rocky valley below Bongjeongam in Seoraksan, seen from the trail
On the trail to Bongjeongam · Nov 2024

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Hi, I’m SeoulAslan

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I hike about twice a month. When a guide comes from my own walk, I say so. When it doesn’t, it’s based on official Korean sources.

  • From Korea
  • 6 years in Vietnam, 1 in Thailand
  • Hikes about twice a month
About this siteAsk me about Korea

Hangyesanseong Trail, Seoraksan: Open After 50 Years (2026)

Checked Oct 6, 2026

Cover image: Hangyesanseong fortress trail in Seoraksan, open from Oct 2, 2026, over an autumn photo of red maple leaves by a waterfall
Autumn on the Inje side of Seoraksan National Park. Photo: Korea Tourism Organization, Hong Jeong-pyo (KOGL Type 1)

Hangyesanseong (한계산성), a mountain fortress from around the 13th century on the Inje side of Seoraksan National Park, opened to hikers on Fri Oct 2, 2026, after about 50 years closed. The open part is short: 0.9 km from the visitor center car park to the south gate ruins of the lower fortress, about 1 to 1.5 hours round trip. It's open 09:00–16:00, entry and parking are free, and this year you sign up on site, with no online booking.

I've walked Seoraksan a few times. Baekdamsa temple up to Bongjeongam, Oseam with an older family member, and Biseondae to Geumganggul cave. This side was never open, so I couldn't go. I haven't walked the new trail yet. I saw the news on Instagram and then lined up the Inje County and news reports to pin down exactly where it starts and ends.

Open sinceFri Oct 2, 2026 (opening ceremony Oct 1)
WalkVisitor center car park → lower fortress south gate ruins, 0.9 km one way
Time1 to 1.5 hours round trip, uphill on the way in
Hours09:00–16:00 KST
Booking2026: sign up on site · from 2027: online, national park reservation system
ClosedNov 15 – Dec 15 (wildfire season)
CostFree entry · free parking (46 cars) · toilets at the visitor center
StartHangyesanseong Visitor Center (한계산성 탐방지원센터), 인제군 북면 한계리 120-1
From SeoulBus from Dong Seoul to Wontong (원통), then taxi

Jump to: Getting there · What opened · Booking · Open days · The fortress · Why it was closed · Autumn colours · FAQ

How do you get to Hangyesanseong by public transport?

The trail starts at the Hangyesanseong Visitor Center (한계산성 탐방지원센터) in Hangye-ri (한계리), Buk-myeon, Inje County. Address: 강원 인제군 북면 한계리 120-1.

  1. Go to Dong Seoul Bus Terminal (동서울터미널), next to Gangbyeon Station (강변역) on subway Line 2.
  2. Take an intercity bus to Wontong (원통), the bus terminal town of Buk-myeon, Inje. Buses leave several times a day and the ride is about 2 hours. Ticket screens and the sign on the bus show the town in Korean, so look for 원통.
  3. From Wontong, take a taxi. Show the driver 한계산성 탐방지원센터 or the address above. If you use an app, see how foreigners can call a taxi in Korea.

By car, park at the visitor center. The car park holds 46 cars and is free. Plan your way back too: the trail closes at 16:00.

Card: Hangyesanseong trail opened Fri Oct 2, 2026 after about 50 years; car park to south gate ruins 0.9 km; 1 to 1.5 hours round trip; entry and parking free; open 09:00 to 16:00; closed Nov 15 to Dec 15 for wildfire season
The trail at a glance. Diagram: Before You Go Korea

What exactly opened?

One section of the lower fortress. You walk from the visitor center car park to the south gate ruins (남문지) of the lower fortress (하성), 0.9 km one way. Most Korean reports put the round trip at about an hour. One report from Oct 4 says 1 hour 30 minutes, because the way in is uphill. Leave 1.5 hours.

If you read the earlier news in mid-September, the trail was described as 0.9 km from Okneotang (옥녀탕) to the fortress. Since the opening, every report measures it from the visitor center car park. The upper fortress (상성), high on the ridge, is not part of the open trail.

Booking for Hangyesanseong

Not online, this year. Until the end of 2026 the trail runs as a trial, and you sign up on site at the visitor center. That's good news for foreign visitors. There's no Korean phone verification or Korean-only booking site to get through before your trip.

From 2027, booking moves online: you'll book in advance on the Korea National Park Service reservation system. This year, on a weekend in leaf season, go in the morning.

Which days is it open?

  • Oct 2 – Nov 14, 2026: open, 09:00–16:00 KST
  • Nov 15 – Dec 15: closed for the autumn wildfire season (산불조심기간)
  • Dec 16 – 31: open again, still on-site sign-up

With 1.5 hours for the round trip, arrive by about 14:30.

A metal footbridge over a rushing stream in a yellow and green autumn forest
Sibiseonnyeotang Valley (십이선녀탕), another Seoraksan trail in Inje County, October. Photo: Korea Tourism Organization, Hong Jeong-pyo (KOGL Type 1)

What is Hangyesanseong?

Hangyesanseong is a stone mountain fortress inside Seoraksan National Park. Korea made it Historic Site No. 553 on Oct 21, 2019. The Korea Heritage Service dates it to around the 13th century. The walls run about 7 km in total: an upper fortress near the ridge and a lower fortress below it.

Its best-known moment is in the Goryeosa (高麗史), the official history of the Goryeo dynasty. In 1259, An Hong-min (안홍민) led the Yabyeolcho (야별초), an elite unit, out of this fortress and defeated a Mongol force. The Korea Heritage portal describes the upper fortress as built on the most rugged ground of any fortress in South Korea.

Why was it closed for 50 years?

The fortress sits inside the national park, but for about 50 years there was no official trail to it, so hikers weren't allowed in. Inje County and the Seoraksan National Park Office built the path and the visitor center together and held the opening ceremony on Thu Oct 1, 2026. Hiking started the next day.

Grey granite cliffs and a rocky valley with red and yellow autumn trees in Seoraksan
Rock and autumn colour on the Inje side of Seoraksan, October. Photo: Korea Tourism Organization, Hong Jeong-pyo (KOGL Type 1)

Can you see autumn colours there?

Yes, in October. Colour starts at the summit of Seoraksan and works its way down, so a low trail like this one turns later than the high ridges. For the 2026 peak dates across the park, see Korea fall foliage 2026: when Seoraksan peaks.

When I went. Last year I walked from Biseondae to Geumganggul on Oct 17. It was foggy, and the leaves were still mostly green, with red only here and there. Mid-October can be early on the lower trails.

Bring a light windbreaker. In October the wind gets cold in Seoraksan by the afternoon. Wear proper shoes for the uphill section, and bring water.

FAQ

Is Hangyesanseong open now?

Yes, since Oct 2, 2026, 09:00–16:00. It closes Nov 15 – Dec 15 and reopens Dec 16.

Do foreigners need a reservation for Hangyesanseong?

Not in 2026. You sign up at the visitor center on the day. Online booking starts in 2027.

How long is the Hangyesanseong trail?

0.9 km one way, to the south gate ruins of the lower fortress. Allow 1 to 1.5 hours round trip.

Is there an entrance fee at Hangyesanseong?

No. Entry and parking are free.

How do I get there without a car?

Bus from Dong Seoul Bus Terminal to Wontong (원통), about 2 hours, then a taxi to 한계산성 탐방지원센터.

Online booking in 2027

Online booking starts in 2027. I'll watch how many people a day it lets in, and whether the national park system works for visitors without a Korean phone number, and add it here.

More fall foliage guides

Sources

— SeoulAslan

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