Nami Island Day Trip (남이섬): Trains, Ferry and 3 Add-Ons
A Nami Island day trip takes about 1 to 1.5 hours each way from Seoul, by train to Gapyeong and then a short ferry. Most visitors spend 3 to 4 hours on the island itself, so you can be back in Seoul for dinner or add one more stop on the way home.