Jeongseon Rail Bike follows a 7.2 km abandoned railway from Gujeol-ri toward Auraji. The ride is easy rather than athletic, with two- and four-person bikes rolling past river scenery, forest, and decorated old tunnels.
It is a very Korean kind of reuse: part transport nostalgia, part family outing, part valley sightseeing. Book ahead in busy seasons, because the departures are timed.