Cycling the Han River: the rental, route, and sunset plan
Cycling the Han River is the easiest way to see Seoul at a relaxed pace: a flat, wide path, separated from pedestrians, with the river beside you the whole way. The ride itself is simple. The rental decision is where riders get caught out, because riverside stations are spaced further apart than stations in central Seoul, and the return clock keeps running while you stop for photos, snacks, and sunset.
This plan keeps it simple. Rent a Ttareungi pass that gives you breathing room, ride the stretch from Yeouido to Banpo, and finish at Banpo for sunset. Park rental shops are the fallback if you would rather have a bike for a fixed block without watching a return clock. Here is how to choose, where to ride, how to return without extra fees, and when to skip the ride entirely.