An official 2026 notice applies trail reservations to the 3.1 km Heullimgol Support Center–Yongso Junction section from October 1 to November 30. Normal entry hours are 9 a.m.–2 p.m., extended to 8 a.m.–3 p.m. during October. The announced daily capacity is 5,000 people. Reserve for your actual date online and separately check weather alerts, closures and transport. The announced 2027 October–November schedule may change.