Transport between Gyeongju and Seoul
After 35 years of visiting Asia, I'm making my first trip to Korea this summer. I'll be taking the Beetle hydrofoil from Fukuoka to Busan, and while I have hotel reservations in all the cities I'm visiting (Busan, Gyeongju, Seoul), I'm wondering what the best way is to get from Gyeongju to Seoul.
Is the express bus comfortable? Is there now a direct KTX connection between Gyeongju and Seoul, or would I have to transfer somewhere, and would that be a hassle?