Kaichu Road, meaning 'Road in the Sea', is a 4.7-kilometer causeway that connects the Katsuren Peninsula on Okinawa's main island to Henza Island, and subsequently to Miyagi, Ikei, and Hamahiga islands. It's not just a functional bridge but a significant scenic route, celebrated for its unique sensation of driving directly over the ocean. This free-to-use road is a vital artery for the eastern islands and a popular destination for both locals and tourists seeking picturesque coastal views.
Visitors consistently praise the stunning ocean scenery on both sides of the road, often describing it as feeling like 'cruising' rather than just driving. The wide, two-lane road makes for a comfortable journey, and many appreciate the numerous parking spots and pull-offs available for photo opportunities. A highlight for many is the 'Umi no Eki Ayahashikan' (Sea Station Ayahashikan) located midway, which offers souvenir shops, local food, and a small museum. Reviewers frequently mention stopping here for lunch, shopping, or simply to enjoy the sea breeze and views. Some even suggest bringing your own food and drinks to enjoy a picnic by the sea.
To make the most of your visit, consider going on a clear, sunny day to fully appreciate the vibrant blue waters. Early mornings or late afternoons are recommended to avoid crowds, especially during peak season, and to catch beautiful sunsets. While the drive itself can be completed in about 15-20 minutes, many visitors suggest allocating 1-2 hours to allow for stops at Ayahashikan, leisurely walks along the beach when the tide is out, and photo opportunities. Bringing sunglasses, a hat, and sunscreen is advisable due to the open exposure to the sun. Some reviewers note that the road can get busy, so planning your visit outside of peak hours can enhance the experience.
Kaichu Road is easily accessible by car, which is the primary mode of transport recommended by visitors due to the nature of the attraction. It connects directly from the Katsuren Peninsula in Uruma City. There are ample parking lots at the 'Umi no Eki Ayahashikan' rest stop, making it convenient to pull over and explore. While specific public transport routes are not frequently mentioned in reviews, driving offers the most flexibility to stop and enjoy the views at your own pace.
A common complaint among some visitors is that while the drive is pleasant, it might not be as spectacular as other scenic coastal drives in Okinawa, such as those near Kouri Island. Some feel that unless you plan to visit the islands beyond Kaichu Road, it might not be worth a dedicated long trip. To mitigate this, consider Kaichu Road as part of a larger itinerary exploring Henza, Miyagi, Ikei, or Hamahiga islands, which many reviewers recommend for their unique charm and history. This approach transforms the causeway from a standalone attraction into an integral and enjoyable part of a broader island-hopping adventure.