Shimanami Kaido Cycling Road

Overview

The Shimanami Kaido is a coastal cycling corridor linking Onomichi (Hiroshima Prefecture) to Imabari (Ehime Prefecture) across a chain of islands in the Seto Inland Sea. Cyclists follow a mostly paved route that alternates narrow island roads, short ferry crossings (on some side trips) and long bridge approaches that lift riders above open water. Expect constant salt air, gull cries, and the metallic tick of suspension cables on windy ridge lines. The route is commonly described as roughly 70 km (Unverified); most riders split it over one long day or two gentler days.

History and Background

The corridor grew out of the Nishiseto Expressway project that physically linked Honshu and Shikoku by a series of bridges. After vehicle links opened in the late 20th century, local governments developed dedicated cycle lanes, signage and rental infrastructure to encourage tourism and regional trade. The islands themselves retain older patterns of life — fishing boats, small citrus orchards and temple clusters — layered beneath the newer bridge spans.

What Makes it Unique

Shimanami mixes short, steep bridge ramps with island interiors scented by citrus groves and the diesel whine of local ferries. Kurushima-Kaikyō Bridge (the multi-span link to Shikoku) is notable for its long suspension sections and the sensation of standing above a working strait; Oyamazumi Shrine on Omishima offers a contrasting cultural depth, its tranquil cedar groves framing centuries-old reliquaries. Compared with flat canal routes in northern Europe, Shimanami delivers frequent visual changes: open sea vistas one moment, stone temple steps and tile roofs the next.

Tips for Enjoyment

• Start early for cooler temperatures and softer light; wind usually picks up by midday.
• Rent an e-bike if you prefer to conserve energy on the longer bridge climbs (many shops offer this; Unverified).
• Carry layers: the open bridge decks can be significantly colder than island roads.
• Bring sunscreen, basic puncture repair kit, and water — convenience stores exist but can be spaced between islands.
• Weekend and holiday traffic can fill cycling rest stops and cafes; reserve accommodation in advance during spring and autumn festivals.

Nearby Spots

• Onomichi: the hill-clustered temple walk and soy-based ramen bowls with a thin, oily broth.
• Ikuchijima/Setoda: lemon orchards and Kosanji Temple with terrace views.
• Omishima: Oyamazumi Shrine and its shaded precincts.
• Imabari: Imabari Castle and industrial textile workshops (towels).

FAQ

Q: How long does it take to cycle the whole route?
A: Fit cyclists can complete it in a long day; many prefer 2 days to stop and explore (Unverified for exact average times).

Q: Can I rent and drop off bikes one-way?
A: One-way rentals are widely advertised; check shop terms and any drop-off fees (Unverified).

Q: Best season?
A: Late spring and autumn offer milder temperatures and clearer visibility; summer brings heat and cicada noise, winter brings stronger winds.

Q: Are helmets mandatory?
A: Helmets are strongly recommended; local rules about mandatory use vary (Unverified).