Rebun and Rishiri Islands: Hiking at the Edge of Japan

Rishiri: The Floating Mountain

Rishiri Island is dominated by the 1,721-meter cone of Mount Rishiri, a dormant volcano whose symmetrical profile rising directly from the sea earned it the nickname Rishiri Fuji. The mountain appears on the packaging of Shiroi Koibito, Hokkaido’s most famous cookie souvenir. The full summit climb takes 10 to 12 hours round trip over rocky terrain, recommended only for experienced hikers with early starts from the Oshidomari trailhead. Alpine flowers including Rishiri poppies bloom on the upper slopes in July.

The island’s coastal road circles the 63-kilometer perimeter past fishing villages, seaweed-drying racks, and viewpoints where the mountain rises behind turquoise bays. Otatomari Marsh on the south side reflects the peak in still water surrounded by wildflower meadows. Rishiri kelp, harvested from the surrounding cold waters, is prized as the finest kombu in Japan and forms the base of dashi stock at high-end restaurants in Kyoto and Tokyo. Sea urchin raised on this kelp is correspondingly rich in flavor and expensive.

Rebun: The Flower Island

Rebun Island, 8 kilometers northwest of Rishiri, is lower and flatter with a maximum elevation of 490 meters but famous for alpine wildflowers that bloom at sea level due to the far-northern latitude. The Rebun Usuyuki-so, a small edelweiss-like flower, grows only on this island. The eight-hour Cape Trail along the western coast from Sukoton Misaki to Momiiwa traverses cliffs, meadows, and flower fields with continuous ocean views, considered one of Japan’s finest day hikes from June through August.

The shorter four-hour course from Sukoton to Nairo covers the most flower-dense sections and dramatic cliff scenery. Cape Sukoton at the island’s northern tip looks across to uninhabited Todo Island where Steller’s sea lions haul out on rocks. Both islands experience cool summers with temperatures rarely exceeding 25 degrees Celsius even in August, and fog can roll in rapidly from the Sea of Japan.

Getting There

Heartland Ferry operates from Wakkanai on Hokkaido’s northern tip to Rishiri in 1 hour 40 minutes and Rebun in 1 hour 55 minutes. Inter-island ferries connect Rishiri and Rebun in 40 minutes. ANA operates seasonal flights from Sapporo to Rishiri Airport. The islands are accessible from early May through October, with late June to mid-August offering the best weather and flower conditions. Accommodation is limited to small ryokan and minshuku that serve fresh seafood including the prized sea urchin. Booking ahead is essential during peak summer weeks.

Practical Tips

The islands receive harsh winter weather with heavy snowfall and strong winds from the Sea of Japan, and most tourist facilities close from November through April. Heartland Ferry operates from Wakkanai, reachable from Sapporo by JR limited express in five hours or by domestic flight in 55 minutes. The minimum recommended stay is two nights, one on each island, allowing the Rishiri coastal drive and one full hiking day on Rebun. Accommodation ranges from simple minshuku at 5,000 yen with seafood dinners to the Rishiri Fuji Kanko Hotel with mountain views. Camping is possible at several coastal sites. Sea urchin season from June through August provides the culinary highlight, with uni bowls at waterfront restaurants serving the morning catch at 3,000 to 4,000 yen.

Practical Information

The islands are accessible from early May through October, with late June to mid-August offering the best weather and flower conditions. Accommodation is limited to small ryokan and minshuku that serve fresh seafood including the prized bafun-uni sea urchin harvested from waters enriched by Rishiri kelp. Uni bowls at waterfront restaurants serve the morning catch for 3,000 to 4,000 yen, the richest and sweetest sea urchin in Japan. Over 300 species of alpine wildflowers bloom on Rebun at sea level due to the far-northern latitude, conditions that create alpine environments at elevations that would support lowland forest further south. The Rebun Atsumoriso lady’s slipper orchid, found only on this island, blooms in late May through June. From Rishiri’s coastal roads, kelp fishermen can be seen wading into shallow water with long rakes in July and August, and cut kelp sheets dry on racks lining every village. ANA operates seasonal flights from Sapporo to Rishiri Airport.

This content is for informational purposes only and reflects independent research. Details may change — verify current information before making travel plans.