The Shimanami Kaido: Cycling Between Honshu and Shikoku

The Shimanami Kaido stands as one of Japan's most spectacular cycling routes, a 70-kilometre ribbon of road and bridge connecting Onomichi in Hiroshima Prefecture to Imabari in Ehime Prefecture. This isn't just a cycle path. It's a journey across the Seto Inland Sea, island-hopping via six suspended bridges, with views that shift from industrial harbours to sleepy fishing villages, citrus groves, and temple-dotted hillsides.

Whether you're an experienced cyclist or someone who hasn't been on a bike in years, the Shimanami Kaido offers something rare: a dedicated cycling path separate from vehicle traffic for almost the entire route, making it accessible to virtually anyone who can ride a bicycle.

Why the Shimanami Kaido Deserves Your Time

Cycling the Shimanami Kaido gives you something few tourist experiences can: the freedom to stop where you want, explore at your own pace, and experience rural Japan from the saddle rather than through a train window. The six islands along the route (Mukaishima, Innoshima, Ikuchijima, Omishima, Hakatajima, and Oshima) each have their own character, from Ikuchijima's lemon groves to Omishima's ancient shrine.

The bridges themselves are engineering marvels. The Kurushima-Kaikyo Bridge, connecting Oshima to Imabari, is the world's longest series of suspension bridges, its three spans creating a rhythmic pattern against the sky. Cycling across these bridges, with the sea stretching out below and the occasional cargo ship gliding past, creates moments you'll remember long after you've returned home.

Planning Your Journey: One Day or Two?

The full 70-kilometre route typically takes 4-6 hours of actual cycling time, but you'll want considerably longer to account for stops, photo opportunities, lunch, and the inevitable detours when you spot something interesting.

One-Day Cycling: Doable for moderately fit cyclists who start early. Leave Onomichi by 8:00 AM, and you can reach Imabari by mid-afternoon, allowing time for lunch and a few brief stops. This requires focus and reasonable stamina but isn't particularly demanding given the route's gentle gradients.

Two-Day Cycling: The relaxed option that lets you properly explore the islands. Stay overnight on Ikuchijima or Omishima, enjoy island dinners, and arrive at your destination without feeling rushed. This pace suits families, photographers, and anyone wanting to experience island life beyond the cycle path.

Three Days: For those who want to explore temples, beaches, and side roads, or who simply prefer short cycling days with long lunches and sunset watching.

Getting to the Start: Onomichi

Most cyclists begin in Onomichi, a hillside city in Hiroshima Prefecture famous for its temple walk and film locations. From Hiroshima Station, take the JR San-yo Line to Onomichi Station (approximately 1 hour 20 minutes, ¥1,520). The Shinkansen doesn't stop at Onomichi, but you can take it to Fukuyama Station (23 minutes from Hiroshima) then change to a local train (20 minutes to Onomichi) if you prefer.

From Onomichi Station, it's a 10-minute walk to the rental cycle terminals near the port. Follow signs for "Shimanami Kaido Cycling" or look for the bright blue bicycle symbols.

Bicycle Rental: Simple and Flexible

The Shimanami Kaido operates an excellent rental system with 13 terminals across the route. You can pick up a bike at one terminal and drop it at any other, making one-way journeys straightforward.

Rental Costs:

Standard city bikes: ¥1,100 per day
Electric-assist bikes: ¥1,500 per day (highly recommended for anyone concerned about fitness)
Cross bikes (similar to hybrid bikes): ¥2,200 per day
Tandem bikes: ¥2,000 per day (available at select terminals)

Deposit: ¥1,000, returned when you return the bicycle to any terminal. If you don't return to the same terminal, the ¥1,000 becomes a one-way fee rather than a deposit.

Electric bikes transform this journey for less confident cyclists. The route isn't mountainous, but the bridge approaches involve climbing, and an electric motor makes these sections effortless. Many fifty and sixty-somethings complete the route comfortably on electric bikes.

Rental Locations: Major terminals include Onomichi Port (near the start), Setoda Port on Ikuchijima (roughly halfway), and Sunrise Itoyama at the Imabari end. Smaller terminals exist on other islands. Book electric bikes in advance during peak seasons (spring cherry blossom, autumn leaves, and summer holidays) as they rent out quickly.

The Route Itself: What to Expect

The Shimanami Kaido's cycling path is marked with a continuous blue line painted on the road surface. Follow the blue line, and you won't get lost. Signs appear regularly showing distances to upcoming islands and terminals.

Onomichi to Mukaishima: The route begins with a short ferry crossing (¥110, bicycles included, runs every 15-20 minutes). Some cyclists prefer taking the Shin-Onomichi Bridge approach, but the ferry offers a gentle introduction to island-hopping.

Mukaishima to Innoshima: Your first major bridge, the Innoshima Bridge, with dedicated cycling lanes offering wide views across the Seto Inland Sea. Innoshima itself feels quiet and rural, with a notable castle museum if you fancy a break.

Innoshima to Ikuchijima: The Ikuchi Bridge connects you to perhaps the route's most charming island. Ikuchijima is famous for lemons and citrus, and you'll see groves covering the hillsides. The main town, Setoda, hosts the extraordinary Kosanji Temple, a reproduction temple complex built by a devoted son in memory of his mother. It's gloriously over-the-top, mixing architectural styles with abandon.

Setoda makes an excellent lunch stop or overnight base. The half-way point means you're neither exhausted nor just starting.

Ikuchijima to Omishima: The Tatara Bridge is a cable-stayed bridge spanning 1,480 metres, offering some of the route's finest views. Omishima houses Oyamazumi Shrine, one of Japan's oldest shrines, with a treasure house containing samurai armour and weapons. The island feels more forested than Ikuchijima, with quieter roads.

Omishima to Hakatajima: A shorter crossing via Hakata-Oshima Bridge. Hakatajima is the least tourist-oriented island, which gives it an authentic, working-island atmosphere.

Hakatajima to Oshima: Another relatively brief crossing, bringing you to Oshima, the final island before Shikoku.

Oshima to Imabari: The spectacular Kurushima-Kaikyo Bridge, actually three consecutive suspension bridges with small islands between spans. This section, cycling high above shipping lanes with mountain views ahead, provides a dramatic finale to your journey.

Practical Considerations

When to Go: Spring (March to May) and autumn (September to November) offer ideal cycling weather. Cherry blossoms appear in early April, while autumn colours peak in late November. Summer (June to August) brings heat and humidity, so start early and carry plenty of water. Winter cycling is possible but cold, especially on bridges where wind chill bites.

What to Carry:

Water (at least 1 litre, more in summer)
Sunscreen and a hat (limited shade on bridges)
Light rain jacket (weather changes quickly)
Cash (many small shops and restaurants don't accept cards)
Basic snacks (convenience stores aren't frequent on smaller islands)
Phone charger/power bank (for navigation and photos)

Food Along the Route: Convenience stores appear in main towns on each island, though less frequently than on Honshu. Plan your lunch around Setoda on Ikuchijima or one of the larger towns on Omishima. Local specialties include:

Lemon-flavoured everything on Ikuchijima (lemon ramen, lemon cakes, lemon soft cream)
Fresh seafood, particularly tai (sea bream) and octopus
Imabari yakitori (chicken on skewers) at your journey's end

Toilets and Facilities: Public toilets appear at regular intervals, typically at rest areas near bridges or in parks near rental terminals. They're clean and well-maintained.

Where to Stay

For two-day cycling trips, accommodation on the islands ranges from simple guesthouses to ryokan inns.

Ikuchijima: Setoda offers several guesthouses and small hotels, many within walking distance of the port. Azumi Setoda, a renovated heritage guesthouse, provides stylish accommodation with a café and bar. Prices range from ¥5,000-15,000 per person depending on the facility and season.

Omishima: Fewer accommodation options but several minshuku (family-run guesthouses) offer dinner and breakfast. Expect to pay ¥7,000-10,000 per person with two meals included.

Imabari: If finishing on day one or starting from Shikoku, Imabari has business hotels and ryokan near the station. JR Clement Inn Imabari offers standard business hotel comfort from around ¥6,000 per night.

Book accommodation at least a week ahead during popular seasons. Many smaller guesthouses don't appear on international booking sites, so the tourist information centres in Onomichi or Imabari can help with reservations.

Getting Back (or Starting from Imabari)

Once you reach Imabari, you have several return options:

Train: Imabari Station connects to major cities via the JR Yosan Line. To reach Hiroshima, take the JR Yosan Line to Matsuyama (35 minutes, ¥770), then the JR Shimanami Liner limited express back to Hiroshima (2 hours 40 minutes, ¥5,650). Alternatively, express buses run directly from Imabari to Hiroshima (2 hours 30 minutes, ¥3,500).

Explore Shikoku: Having reached Shikoku, you're well-positioned to explore Matsuyama (famous for Dogo Onsen), continue along the Shikoku coast, or embark on parts of the 88-temple pilgrimage.

Reverse Direction: Some cyclists prefer starting in Imabari and finishing in Onomichi, which provides slightly more downhill sections on bridge approaches. The route works equally well in either direction.

Tips from Regular Riders

Start Early: Beginning at 7:00 or 8:00 AM gives you the entire day, cooler morning temperatures, and better light for photography.

Don't Rush the Bridges: The temptation to race across bridges is strong, but these are the moments to slow down, stop at the viewing platforms, and appreciate where you are.

Explore Side Roads: The marked route is fastest, but many islands have quiet coastal roads worth exploring if you have time. Locals can point you toward beaches or viewpoints off the main path.

Respect Other Cyclists: The path is shared. Some riders are fast, others slow. A friendly "sumimasen" when passing keeps everyone happy.

Puncture Repair: Rental terminals provide basic repair tools if you get a flat tyre, but they're rare given the well-maintained paths.

Why This Journey Matters

The Shimanami Kaido represents something increasingly rare: dedicated infrastructure for slow travel. You're not fighting traffic or navigating complex city streets. You're simply cycling, island to island, with the sea on both sides and time to notice things like the way fishing nets are stacked, the smell of citrus blossom in spring, or the precise angle of late afternoon sun on a bridge cable.

It's cycling for people who don't necessarily love cycling. The route's appeal lies not in speed or distance but in the particular pleasure of human-powered travel through landscapes that reward attention. Every hill you climb without a motor, every bridge you cross under your own strength, adds something to the experience that driving or training through can't match.

The Shimanami Kaido works because it makes adventure accessible. It proves that you don't need to be an athlete to undertake a genuine physical challenge, or wealthy to experience extraordinary landscapes, or young to try something new. You just need a bicycle, a day or two, and the willingness to pedal.

Final Practical Notes

Bridge Tolls: Cyclists pay small tolls on some bridges, usually ¥50-200 per bridge. Keep small change handy. Total tolls for the complete route run around ¥500.

Luggage: Most cyclists carry just a daypack. If you have larger luggage, courier services (takkyubin) can send bags ahead from Onomichi to Imabari hotels for around ¥2,000-3,000, arriving next day.

Mobile Coverage: Generally good throughout the route, though some smaller islands have occasional weak spots.

Emergency Support: Each rental terminal can assist with bicycle problems or emergencies. They have phone numbers for their network printed on rental documentation.

Fitness Level: Honestly, moderate fitness suffices, especially on an electric bike. If you can cycle 20 kilometres comfortably on flat ground, you can complete this route with breaks.

The Shimanami Kaido isn't Japan's most famous attraction, and it won't appear in many "must-see" lists. But for travellers seeking experiences over sights, movement over monuments, and the particular satisfaction of arriving somewhere under your own power, this island-hopping cycle route delivers something genuinely special. The bridges will impress you. The islands will charm you. But what you'll remember most is the simple, profound pleasure of cycling between two seas, one pedal stroke at a time.