Route Overview
The Kaikyō Line (National Route 339) stretches approximately 67 km across the Tsugaru Peninsula in Aomori Prefecture, connecting the coastal town of Minmaya in Imabetsu to Kodomari, Nakasato, and Goshogawara.
This scenic coastal road offers breathtaking views of the Tsugaru Strait and the Sea of Japan. One of its most famous parts is the “Tatsudomari Line,” between Cape Tappi and Kodomari, known for its steep cliffs, winding curves, and stunning ocean views.
Recommended Driving Section
Minmaya → Cape Tappi → Kodomari → Nakasato → Goshogawara (Approx. 67 km)
The route from Minmaya to Cape Tappi features sharp curves along rugged cliffs.
From Cape Tappi to Kodomari, the Tatsudomari Line offers dramatic switchbacks and views of Hokkaido on clear days.
From Kodomari to Goshogawara, the road becomes flatter and passes through peaceful rural landscapes.
Road Conditions & Safety
- Fully paved throughout
- The Tatsudomari section is narrow, with steep slopes and sharp curves
- Closed in winter (usually from early November to late April) due to snow
- Summer fog can reduce visibility
Points of Interest
- Cape Tappi Lighthouse: A must-see spot with ocean views
- Staircase National Route (Route 339): A unique pedestrian-only “national road” made of stairs
- Roadside Station Cape Tappi: Great for souvenirs and local food
- Kodomari: A quiet fishing town with local charm
- Lake Jūsan: A lake known for birdwatching and beautiful sunsets
Local Food
- Fresh seafood from the Tsugaru Strait: Uni (sea urchin), squid, abalone
- Shijimi clam dishes from Lake Jūsan
- Tsugaru dishes like igamenchi (squid fritter), jappa-jiru (fish soup), and Tsugaru soba
Access & Fees
- No tolls – free to drive
- Closest cities: Aomori City (to the east), Goshogawara (to the west)
- From Aomori to Minmaya: about 1.5 hours by car
- From Goshogawara to Kodomari: about 1.5 hours by car
Best Season & Climate
- Best time: May to October
- Summer: Cool and clear along the coast
- Autumn: Colorful foliage along the inland hills
- Closed in winter due to snow (especially Tatsudomari Line)
Sample Touring Plan
Day Trip: Aomori → Minmaya → Cape Tappi → Kodomari → Lake Jūsan → Goshogawara → Aomori
Overnight Trip: Stay in Cape Tappi or Kodomari, then explore Shirakami-Sanchi or continue into Akita