Seoul to Busan Itinerary: 3-Day Guide to Busan & Gyeongju (Days 5-7) 2026년 02월 08일 by travelkorea Seoul to Busan Itinerary onn Day 5, you'll leave Seoul behind and head south to Busan. The KTX gets you there in just 2.5 hours, so even if you catch a morning train, you'll have the whole afternoon to explore.… Read more