This article introduces the Shikoku Karst Skyline Road (Prefectural Route 383), a scenic touring route that spans Ehime and Kochi Prefectures.
Stretching about 25 km, it winds through one of Japan’s three major karst landscapes, reaching elevations over 1,000 meters.
This highland road features dramatic limestone formations, open grasslands, grazing cows, and sweeping panoramic views, offering a unique and unforgettable ride.
Recommended Section
The most scenic part is the stretch from Mezurudaira (姫鶴平) to Tengu Highland (天狗高原).
This section follows a ridge with continuous curves and wide-open views. On clear days, you can see both the Seto Inland Sea and the Pacific Ocean.
Traffic is generally light, especially on weekdays, making it ideal for a relaxed and scenic ride.
Road Conditions & Safety
Road width ranges from 4 to 6 meters, with generally good pavement.
However, riders should watch for narrow areas, fallen rocks, and occasional low-visibility fog.
Speed limits are mostly 30–40 km/h, and free-roaming cows may appear on the road, so caution is essential.
Suggested Stopovers
Scenic Point: Godan Highland Viewpoint – for sweeping views of the karst plateau
Iconic Spot: Mezurudaira – wind turbines, grazing cows, and open skies
Rest Area: Tengu-so – facilities for dining, lodging, and observation
Local Cuisine: Try the “Karst Bowl” (local beef over rice) or fresh milk soft-serve at Tengu-so
Fees & Rental Information
Route 383 is completely toll-free.
Motorcycle rentals are available in Matsuyama or Kochi City, with 125cc–400cc bikes from around ¥5,000/day (advance reservation recommended).
Best Season & Weather
The best touring seasons are May to July and September to October.
Enjoy green highlands in spring, cool breezes in summer, and clear air with colorful foliage in autumn.
Note: The route may be closed during winter (November to April) due to snow or ice.
Food & Rest Areas
Stop by Himezuruso or Tengu-so along the route for meals and rest.
They offer local specialties, including dairy products, soft serve ice cream, and the popular Karst Bowl.
Both locations are motorcycle-friendly.
Suggested Touring Plans
Day Trip: Start from Matsuyama or Kochi → Kumakogen Town → Shikoku Karst Skyline → Exit via Susaki (approx. 5–6 hours)
Overnight Trip: Stay at Tengu-so → Next day, continue to Shimanto River or Yusuhara for more countryside exploration
Access
The starting point at Kumakogen Town or Tsuno Town can be reached by car from Matsuyama IC or Susaki East IC in about 1.5 to 2 hours.
There’s no public transit nearby, so car or motorcycle access is essential.
Note: No fuel stations on the highland road, so fuel up in advance.