**NOTE: check out the comments section – this seems to be a way bigger hassle than it appears…
KTX? More like KTeXpensive! (BOOM! Like that one? ok ok you can use it too if you want)
Korea’s tourism board has declared 2010-2012 the VISIT KOREA YEAR. Shouldn’t it say ‘yearS’? Whatever; there’s a FREE Seoul – Busan and Busan – Seoul shuttle bus. Check out their official site to make a booking and get some more info. (NOTE: The shuttle also goes Seoul – Gyeongju and Seoul – Jeonju)
FROM SEOUL, the bus leaves from in front of the Gwanghwamun Duty Free Shop at 8AM. It arrives in Busan Lotte Hotel in Seomyeon at 2PM and then also goes on to the Paradise Hotel in Haeundae at 2:30.
FROM BUSAN, the bus departs from the Paradise Hotel in Haeundae at 4PM, and then makes one more stop at the Lotte Hotel in Seomyeon at 4:40PM. The bus arrives in Seoul at the Gwanghwamun Duty Free Shop at 10:30PM.
WHAT TO DO: Go to the calendar at the bottom of the page and click your desired route (Busan or Gyeongju or Jeonju), fill out your info, and then check your email for confirmation. Easy! I think? I haven’t actually tried it. Pretty cool though, huh?
FOR MAPS, ETC, go to the link above, and on the right-hand side of the page where it says “Bus Route,” click on Seoul – Busan. On my browser, it’s on a different line than the other ones, so I didn’t think it went to Busan at first. Then you can click on the “map” links.