When you are at Jeongeup town, you will notice that there is quite a good network of city buses (without air-con) moving around the town and surrounding areas.
If you are going to Naejangsan National Bus, then you need to take bus number 171 at the bus stop near to the train station or Jeongeup Express Bus Terminal. Bus number 171 comes about every 20 minutes and the fare to Naejangsan costs 1100 Korean won (one way). Distance is less than 10km and should take about 30 minutes to reach the bus terminal at Naejangsan village. If you are not sure whether you are taking the bus at the right direction, simply tell the bus driver the word "Naejangsan" (and showing a map or Naejangsan in Korean characters helps).
As the signages on the bus stops are all in Korean characters, it will be helpful if you know beforehand what buse numbers to take to your final destination.
Updated Oct 23, 2007
Besides taking the express buses, another way to reach Jeongeup town is by train. There is a train station at the heart of Jeongeup town so it is very convenient. Personally, I have not taken the trains as I am too used to taking the express buses instead. For more information, you can visit the official website below in English. In fact I am very happy to see that many of the important Korean websites now have an English version which is very important to foreign visitors like me :)
Updated Oct 23, 2007
Website: http://info.korail.com/2007/eng/eng_index.jsp
One of the best ways to get from Seoul to Jeongeup and back is by taking the express buses from the Seoul Express Bus Terminal (see website below) to Jeongeup Express Bus Terminal. The Seoul Express Bus Terminal is very big and located at the south of the Hangang River at Seoul, in fact it has two terminals next to each other.
For buses to Jeongeup, you are supposed to go to the Honam Terminal. Once you are there, there are signages, timetables etc in English so there should not be a problem. When I was there in October 2007, the bus to Jeongeup leaves at gate number 5 or 6 (check with the staff). The buses to Jeongeup are air-conditioned, comfortable and very frequent (at least one per hour from 6am to night) and costs about 13000 to 18000 Korean won per trip (one way, depending on whether it is normal or luxurious bus which seems about the same to me). Time taken is about 3.5 hours and there is a rest stop halfway for you to go toilet, grab some snacks and drinks etc.
Updated Oct 23, 2007
Website: http://www.kobus.co.kr/web/eng/02_service/service01.jsp
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Reviews and photos of Chongup attractions posted by real travelers and locals. The best tips for Chongup sightseeing.

One of the best ways to get from Seoul to Jeongeup and back is by taking the express buses from the Seoul Express Bus Terminal (see website below) to Jeongeup...
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Jeongeup (Chongup) - Gateway to Naejangsan

Jeongeup (sometimes also called Chongup in English) is a relatively small and laid back town located at the southwest Jeollabuk-do province of South Korea. In fact, it is just next to the famous Honam...
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