Nagasaki to Seoul Road Trip Guide: Ferries, Highways, and Hidden Gems

The Nagasaki-to-Seoul corridor spans 750 kilometers of expressway and sea crossing, bookended by two of East Asia's most storied port cities. The route's singular challenge is the Korea Strait: no bridge connects Japan and South Korea, so your car must ride a car ferry from Fukuoka to Busan. This guide covers the full journey, including the best stops Nagasaki to Seoul, and answers the central question: how long to drive Nagasaki to Seoul? We also tackle whether is it worth driving Nagasaki to Seoul given the ferry costs and border formalities.

The drive begins on Japan's Kyushu Expressway (E34) north from Nagasaki, passing through Saga Prefecture's volcanic landscapes before joining the Kyushu Expressway (E3) toward Fukuoka. After a 3-hour drive, you'll reach Hakata Port for the ferry to Busan. Once in South Korea, the Namhae Expressway (Route 10) and Gyeongbu Expressway (Route 1) carry you to Seoul, a 4.5-hour drive. Total road time is approximately 7.5 hours plus a 3.5-hour ferry crossing.

Japanese expressways have frequent rest areas (SA/PA) every 30–40 km, with dedicated parking, restrooms, and some have play areas. South Korean service plazas also appear at similar intervals. For fatigue management, plan a break every 2 hours: the Mazura PA on the E3 at km 110 offers a view of Ariake Sea; on the Korean side, the Cheonan Samgori rest stop (Route 1, near Cheonan) has a dog run and picnic tables.

Both highways are well-lit and paved, with emergency call boxes every 1 km. In Japan, pets can travel in the car but must be in a carrier on the ferry; Korea requires a health certificate and quarantine inspection at entry - allow 30 minutes extra.

Fuel costs total roughly ¥25,000 (about $170) for the Japanese leg and ₩70,000 ($53) in South Korea, based on average consumption of 8 L/100 km. The car ferry from Fukuoka to Busan costs about ¥35,000 ($240) for a sedan and driver, plus ¥10,000 ($70) per extra passenger. Book at least two weeks ahead for summer sailings.

Both countries require an International Driving Permit alongside your home license. Japanese expressway tolls for Nagasaki–Fukuoka are ¥6,500 ($48); South Korean tolls for Busan–Seoul are ₩21,000 ($16), using the Hi-pass transponder. Border crossing in Busan includes vehicle inspection, typically taking 1–2 hours. For detailed stop planning, see this how to find the best stops and hidden gems between cities.

• Japan leg: E34 and E3 expressways, tolled, speed limit 80–100 km/h
• Korea leg: Route 10 (Namhae Expressway), Route 1 (Gyeongbu Expressway), tolled, speed limit 100 km/h
• Ferry operator: JR Kyushu Ferry (daily, carries vehicles) and Camellia Line (from Hakata to Busan)

The route crosses the volcanic Aso-Kuju region, with Mount Aso's caldera visible from the E3. Just south of Fukuoka, Yame's tea terraces and the Chikugo River plain offer a scenic detour. In South Korea, the Namhae Expressway hugs the southern coast, passing the Hallyeohaesang National Park archipelago before turning inland near Jinju.

Two UNESCO World Heritage Sites anchor the trip: the hidden Christian sites of Nagasaki (included on the route's start) and the Gyeongju Historic Areas, a 1-hour detour off Route 1 between Busan and Seoul. Local commerce thrives at rest stops: try Nagasaki's champon noodles at a rest area near Saga, and in Korea, sample Busan's dwaeji gukbap (pork soup) at a motorway service plaza. Both countries have 24-hour convenience stores and vending machines at most rest areas.