Korea has one of the most complete long-distance cycling networks in the world, and the ride from Seoul to Busan is its signature route — 633km, almost entirely on dedicated, paved riverside bike paths, stitched together from four certified paths: the Ara, Hangang (Han River), Saejae, and Nakdonggang bike paths.
The route, roughly
- Ara Bike Path — 21km, from the Ara West Sea Lock near Incheon east to the Han River in Seoul.
- Hangang (Han River) Bike Path — follows the Han out of Seoul to Chungju.
- Saejae Bike Path — the short, hard middle section (about 100km) that crosses the mountainous spine of the country between Chungju and Sangju.
- Nakdonggang Bike Path — the longest single stretch at 389km, following the Nakdong River all the way down to the sea at Busan.
The passport & certification centers
The whole route is dotted with certification centers — small booths (some literally repurposed red phone boxes) roughly every 15–40km, each with a unique rubber stamp. Buy a cyclist's passport (수첩) at the start, stamp it at every center along the way, and hand it in at a manned certification center at the end to be officially recognized as having completed the crossing. It's genuinely part of the fun — half scavenger hunt, half souvenir.
The one hard part: Ihwaryeong Pass
The Saejae section is short but has the worst climb on the entire route: Ihwaryeong Pass, about 539m, the longest and steepest climb on any of Korea's certified paths. It's steep enough that a lot of ordinary riders end up walking their bike up the last stretch — and that's completely normal, not something to be embarrassed about. Everything else on the route is close to flat, following river valleys.
How many days it takes
Entirely a matter of pace and fitness:
- Comfortable, first-timer pace: 7–8 days at 80–90km a day, with real time to stop, eat, and take photos.
- Standard pace: 6 days at around 100km a day — long days, but very doable for a reasonably fit rider.
- Fit and motivated: 4–5 days.
If you can comfortably ride 60–70km in a day and are willing to walk the steep ramps on Saejae, you can finish this in about a week.
What kind of bike
A hybrid or mountain bike with real gears makes the biggest difference — a flat-pedal city bike will get you there, but gearing matters a lot on the Saejae climb, and a larger, more upright frame is noticeably easier on the knees and lower back over multiple 80–100km days than a hunched-over city bike. See our bike rental page if you'd rather not bring your own.
Where to sleep
The route passes through towns often enough that you're rarely more than a couple of hours from a motel (모텔) or guesthouse, and riverside camping is common and generally tolerated at designated rest areas along the path — bring or rent proper camping gear if that's the plan, since not every stretch has a town nearby.
A realistic first attempt
Most first-timers don't ride the whole 633km in one trip — riding just the Han River path out of Seoul for a day, or doing a shorter multi-day loop, is a completely valid way to experience what makes this network special without committing to the full crossing. But if you do go the whole way, Busan's Nakdong River estuary — with the sea finally in view — is one of the better "you actually did it" moments a trip to Korea can offer.