Dong Hoi to Hai Phong Road Trip Guide

The drive from Dong Hoi to Hai Phong covers 580 kilometers of National Highway 1A, passing through the narrow waist of Vietnam where the country is only 50 kilometers wide at its thinnest point near Đèo Ngang. This route is famous for its dramatic transition from the limestone karsts of Phong Nha-Kẻ Bàng to the Red River Delta's flat, waterlogged landscape.

National Highway 1A (QL1A) is the primary artery, with bypasses around major towns and the new Cầu Gianh bridge reducing congestion. Toll plazas every 50–70 km accept cash or e-toll cards (VETC). Fuel stations are frequent, but it is wise to fill up at larger towns like Vinh and Thanh Hóa.

• Fuel economy: expect 6-8 L/100km; petrol prices around 23,000 VND/liter (as of 2024).
• Google Maps estimates 13 hours, but plan for 14-15 with rest breaks.
• Alternative: take the coastal route (QL1A through Nghi Sơn) for scenic views, but add 30-45 minutes.

The QL1A is generally in good condition, but sections near Nghi Sơn have heavy truck traffic, especially from the industrial port. Speed limits vary from 60-90 km/h, and police checks are common for speeding and seatbelt violations. For families, rest stops like Moc Bai (Khe Vang) and the petrol stations at Cam Lộ have clean restrooms and playgrounds. Pet owners will find that many roadside restaurants are welcoming, but it's best to keep pets on a leash and carry water.

To manage fatigue, plan to stop every 2 hours or 150 km. The most refreshing stop is at the Hoàng Mai rest area, which has a lake and shaded picnic tables. For an off-route detour, consider the Tam Cốc – Bích Động caves near Ninh Bình, which are a 45-minute detour and offer boat rides through rice paddies. For more tips on uncovering hidden gems, check out how to find the best stops and hidden gems between cities.

Just north of Dong Hoi, the Phong Nha-Kẻ Bàng National Park is a UNESCO World Heritage Site with over 300 caves, including Son Doong, the world's largest. While most tourists explore the park itself, the region east of QL1A features untouched beaches like Nhat Le, where local fishermen still launch bamboo boats at dawn.

As you cross into Nghệ An, the landscape opens to the Vinh plains, known for their maize fields and the entrepreneurial spirit of local vendors who sell corn on the cob at temporary stalls near the highway. In Thanh Hóa, the town of Sầm Sơn is a popular beach resort, and its seafood restaurants along the beach road offer excellent crab and prawns. Approaching Hai Phong, the coastal road (QL10) offers views of the Đồ Sơn Peninsula, where local kitesurfers gather during the windy season.