The Four Rivers route is one of those rare long-distance rides where the logistics are almost as impressive as the scenery. South Korea built a dedicated cycling path along four major rivers — the Han, Nakdong, Geum, and Yeongsan — connecting the country coast to coast, and the infrastructure is genuinely excellent.
The tarmac surface is smooth and well-maintained throughout, route markers appear at regular intervals, and the path sits almost entirely separate from motor traffic. You roll through riverine flatlands the majority of the time, which means the daily effort is surprisingly modest for a route stretching 1,757 kilometres.
Most riders complete the full crossing in around 18 to 25 days, averaging 70 to 100 kilometres daily.
The terrain is predominantly flat alongside the river corridors, though you will encounter a handful of short but genuine climbs where the route crosses watersheds between rivers — notably the Saejae Pass between the Han and Nakdong sections, which rises around 156 metres and earns you a stamp in your cycling passport at the top.
That passport system, picked up for free at the start, is a lovely touch, rewarded with a certificate at the finish.
Certified guesthouses called *injeung* places dot the route every 20 to 40 kilometres, specifically catering for cyclists, so wild camping or frantic accommodation searching is rarely necessary. Bike hire is available at major start points including Seoul and Busan if you prefer not to travel with your own. Convenience stores appear frequently enough that dehydration and hunger need never be genuine concerns.
April to June and September to October offer the most reliable riding weather, avoiding summer humidity and typhoon risk — beginners tackling their first multi-week tour will find this route genuinely approachable.