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Seoul Trail Route 5: Achasan Mountain

A medium route from the Kkalttakgogae Pass rest area on Yongmasan along the Achasan ridge to Gwangnaru Station. Its theme is “a path linking people and history”: the trail is well kept, with fine views and many historic sites.

The Achasan ridge
The Achasan ridge · 2011 · Straitgate · 2011 · CC BY-SA 3.0

Difficulty · Official Seoul Trail rating

Medium

Official Seoul Trail rating: level 2 of 3

Rating systems differ between pages. An official grade follows the operator’s own scale, so an “easy” route can still take over three hours. Compare routes by walking time and distance as well. Getting to and from stations is described separately in each route.

1. Achasan Mountain route

From Kkalttakgogae Pass Rest Area to Gwangnaru Station: 4.6 km past 8 stops.

Difficulty
Medium
Walking time
About 2 hr 10 min
Distance
4.6 km
Area
Gwangjin-gu
Official route page (Korean) ↗

Official Seoul Trail information · from the start of the route to its end

Route order

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  1. 1Kkalttakgogae Pass Rest Area

    깔딱고개 쉼터

    Start
  2. 2Yongmasan Mountain Fort No. 5

    용마산 5보루

  3. 3Heliport

    헬기장

  4. 4Achasan Mountain

    아차산

  5. 5Achasan Sunrise Park

    아차산 해맞이공원

  6. 6Achasan Mountain Information Center

    아차산 관리사무소

  7. 7Achasan Ecological Park

    아차산 생태공원

  8. 8Gwangnaru Station

    광나루역

    Finish

Getting to the start

The official starting point is Sagajeong Station (Line 7) Exit 4. Use the map on the official route page to find the way from the exit to the trail.

NAVER Map ↗

Getting back

The route ends at Gwangnaru Station (Line 5) Exit 1 (official information). Route 6 (Godeoksan Mountain) continues from this station.

Good to know

  • Stamp boxes: the Kkalttakgogae Pass rest area and the Achasan administrative office. They are outdoors and the ink can dry out, so bring your own ink pad (official advice).
  • As a medium route it includes mountain paths. Wear shoes with good grip and carry water (KoreaClear advice).
  • At 4.6 km, this is the shortest of the 21 Seoul Trail routes.
  • Yongmasan Fort No. 5 is an old fort site where the Mangusan and Achasan ridges meet; it is now a heliport (official information).

Two more Achasan trails

We also cover two trails from Gwangjin-gu’s official hiking map: the Achasan Fortress Trail (about 50 min) and the Achasan–Yongmasan Ridge Hike (about 2 hr 10 min). They follow different paths from this route.

See the two Achasan trails →

About the Seoul Trail

  • The Seoul Trail is a walking trail around Seoul: 21 routes, 156.5 km in total.
  • Parts of a route are sometimes detoured for events or construction. Check the official notices before you go.
  • Stamp books are handed out at Seoul Trail Information Centers and a few other places. They may run out, so call ahead (official advice).
  • Enquiries: Seoul Trail Information Center, +82-2-779-7902 to 7904
Seoul Trail notices (detours, Korean) ↗