From April 2026 until further notice, Bukhansan Uiryeong requires reservations on weekends and public holidays but not on weekdays. The trail between Ui and Gyohyeon via Obong Observatory is 3.5 km and takes around 1.5–2 hours. Entrances are at 349 Samyang-ro 181-gil, Seoul and 93 Seokguram-gil, Yangju. No parking is available; the Ui-Sinseol line at Bukhansan Ui and bus 37 toward Gyohyeon are listed. Verify holiday bookings, entry hours and closures.