Jeongdongjin Rail Bike is an electric rail bike attraction that runs on tracks near the sea, right next to Jeongdongjin Station in Gangneung. It offers two-seater and four-seater bikes, and pedaling is assisted by an electric motor in a semi-automatic system. Departures are at 45 minutes past each hour from 8:45 a.m. to 4:45 p.m., and advance reservations on the website are required. The 4.6 km round-trip course tends to feel short.