Planning a Multi-Day Trip Across South Korea
South Korea’s multi-day trips run on two systems: the KTX network, fast enough to turn Seoul, Gyeongju and Busan into one loop, and domestic flights, the only practical way onto Jeju’s volcanic interior.
The Golden Triangle: Seoul, Gyeongju, Busan, 5 to 7 days
Spend the first three days in Seoul covering Gyeongbokgung in a rented hanbok for free palace entry, the Bukchon Hanok Village walk inside its 10am to 5pm visiting window, Insadong’s tea houses, the Noryangjin fish market, and a DMZ half-day tour. On day four, the morning KTX from Seoul Station to Singyeongju takes about 2 hours 5 minutes, from roughly 49,300 won, for Bulguksa Temple, Seokguram Grotto, the Daereungwon Royal Tombs and Wolji Pond, whose lit pavilions are worth an evening walk around the perimeter, no boats included. Days five through seven cover Busan: a 30-minute KTX from Singyeongju connects, then Haeundae Blueline Park’s Sky Capsule, the cliffside Haedong Yonggungsa Temple, a soak at Spa Land Centum City, and Jagalchi Market’s seafood stalls. Return KTX to Seoul runs about 2 hours 15 minutes, priced from roughly 59,800 up to about 78,700 won depending on the train, a range that widened further after the KTX and SRT fare systems merged on 1 September 2026. Reserve Golden Triangle KTX legs on letskorail.com 30 days ahead of each departure, or book a bundled Seoul-Gyeongju-Busan package on GetYourGuide if you would rather have transport and hotels arranged together.
Jeju Island volcanic circuit, 3 or 4 nights
A flight from Gimpo to Jeju takes about 1 hour 10 minutes, with over 100 daily departures across Jeju Air, T’way and Korean Air, fares from roughly 40,000 to 90,000 won one-way. Rent a car at Jeju’s airport through DiscoverCars , International Driving Permit required, since the island’s coastal and mountain sites are not efficiently linked by bus. Day one covers the east coast: the UNESCO tuff cone Seongsan Ilchulbong, 5,000 won entry, and the Manjanggul Lava Tube, reopened in May 2026 after rockfall repairs, 4,000 won. Day two is Mount Hallasan, South Korea’s highest peak, via the Seongpanak Trail to Baengnokdam Crater Lake, 9.6km each way and 8 to 9 hours round trip, with a mandatory advance permit through visithalla.jeju.go.kr , capped at 1,000 hikers a day. Day three covers the south and west coast: Jeongbang Waterfall, which plunges directly into the ocean for 2,000 won, the hexagonal basalt pillars of Jusangjeolli, and sunset at Hyeopjae Beach.
Gangwon-do alpine and east coast traverse, 3 nights
KTX from Seoul to Gangneung takes 1 hour 40 minutes, from about 27,600 won, for a first day at Gyeongpo Lake and Anmok Beach’s coffee street. Day two, a coastal bus north to Sokcho in about an hour reaches Abai Village, crossed by the hand-pulled wooden gaetbae boat for 500 won. Day three covers Seoraksan National Park: the Gwongeumseong Cable Car at 16,000 won adult, same-day tickets only, or the 800 steel steps of Ulsanbawi Rock, then an express bus back to Seoul in about 2 hours 10 minutes.
The verdict
The Golden Triangle needs the least advance booking of the three; the Jeju circuit needs the earliest one, since Hallasan’s daily hiker cap fills fastest in peak autumn and spring. For a single-day version of the Gyeongju leg, see the South Korea day trips guide .
Before you go
Reserve the Hallasan trail permit the moment Jeju dates are set; the 1,000-hiker cap on Seongpanak Trail fills first on October and April weekends.