The Korean peninsula has been divided between north and south for over 60 years. In land size North Korea is slightly larger but has only half the 50m population of the South, which also has the lions's share of infrastructure and development. This means that cycle touring is really only in the South, although it is now possible to tour in North Korea
South Korea, while densely populated, is highly urbanised with many large cities. The big advantage of this is that the countryside is relatively quiet and peaceful - at least away from the many busy highway corridors. Fortunately most of the time on your bike tour you're not even aware of these.
Over the past five years a huge amount has been invested in cycling infrastructure around the country - particularly outside the cities. This is not very well known by the rest of the world but that is changing and future years are likely to see a big increase in cycle tourism. The vast majority of this was in the Four Rivers Project completed in 2011.
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