Nikko Cryptomeria Avenue: The World's Longest Tree-Lined Road

Nikko Cedar Avenue is the world's longest tree-lined avenue, running about 35 kilometers along three historic highways: the Nikko Kaido, the Nikko Reiheishi Kaido, and the Aizu Nishi Kaido. Listed in the Guinness Book of World Records in 1996 as the longest avenue of trees in the world, its solemn rows of centuries-old cedars soaring skyward convey a weight of history that overwhelms visitors.

Highlights

The avenue, where cedars grown so tall you must look up form an arch from both sides, is like a tunnel of green. Sunlight filtering through the branches feels mystical, letting you experience the harmony of nature and history nurtured over long ages. Some sections still retain the stone paving and milestone mounds that watched over travelers of old, conveying the atmosphere of the former highway to the present day. There are also stretches with maintained walking paths, offering the pleasure of walking the historic road slowly. Nikko Cedar Avenue is a rare and precious cultural property, one of very few in the nation designated as both a Special Historic Site and a Special Natural Monument.

Seasonal Highlights

Early summer with its beautiful fresh greenery, and autumn with its clear air, are especially recommended for strolling. On early mornings from autumn into winter, morning mist gathers over the avenue, and you may encounter the fantastical sight of sunlight illuminating the fog. In summer the shade of the trees is pleasant and softens the strong sunlight. In winter the deep green of the evergreen cedars stands out against the snow, and you can savor an avenue wrapped in silence. It can be enjoyed year-round together with a visit to shrines and temples such as the World Heritage Nikko Toshogu.

Access and Essential Information

• Location: Nikko City, Tochigi Prefecture (the Imaichi area serves as a base)
• Total length: about 35 kilometers. An estimated 200,000 trees were planted, and more than about 12,500 cedars remain today
• History: it is said that in the early Edo period, Matsudaira Masatsuna, a retainer of the Tokugawa family, spent over twenty years planting the trees and donated them to Toshogu
• Getting there: the area around Imaichi Station on the JR and Tobu Nikko lines serves as a base. On the way to Nikko or Kinugawa Onsen, you can view the grand avenue from the train window
• Nearby: there are roadside stations and a Cedar Avenue Park where you can rest and enjoy exhibits about the history of the avenue

Practical Travel Notes

At about 35 kilometers, the avenue is extremely long, and walking the whole of it is not realistic. It is best to choose an area where the highlights are concentrated, such as a section with maintained walking paths or around Cedar Avenue Park. Since much of the avenue runs alongside active roads such as national highways, take great care of vehicle traffic and choose sections with sidewalks or footpaths. The historic cedars are protected, so care is needed not to damage their roots or trunks. If stopping by between Nikko sightseeing spots, checking in advance for a rest area with parking makes for a smooth visit.

A Word of Advice

It is easy to merely pass through Nikko Cedar Avenue, but stepping out of the car and walking even a few hundred meters lets you feel the giant cedars, nearly 400 years old, up close and changes the impression entirely. When traveling to Nikko Toshogu or Kinugawa Onsen, deliberately setting aside time for a stroll is recommended.

📚 Sources

This article is based on sightseeing guidance published by Nikko City and its tourism association, and public materials on the Nikko cedar avenue. Notes on the Guinness World Record, its designation as a special historic site and special natural monument, and its origin in the planting by Masatsuna Matsudaira refer to on-site explanations and public materials. Facility openings such as the cedar avenue park may change, so please confirm with the official information before your visit.

Visitor Checklist

• Estimated time: About 1 to 2 hours to stroll a highlight section or around the cedar avenue park.
• Route tips: At about 35 km long it cannot all be walked, so pick a maintained walking section.
• Safety note: Much of the avenue runs along active roads, so watch for cars and choose sections with sidewalks or paths.
• Etiquette: The historic cedars are protected, so take care not to damage roots or trunks.
• Nearby plan: Combine with visits to the Nikko shrines and temples or the route to Kinugawa Onsen.

Practical Information for Your Visit

The Nikko Cedar Avenue is itself a highway some 37 kilometres long, so the information below covers Suginamiki Park (Segawa, Nikko City, Tochigi Prefecture), the usual base for a walk along it.

• Admission: Free of charge
• Opening hours: The former Ezure Residence within the park is open from 10:00 to 16:00
• Closed: The former Ezure Residence is closed from December 29 to January 3 each year
• Parking: Free of charge. 3 spaces for large buses
• Getting there: Immediately outside Kami-Imaichi Station on the Tobu Nikko Line
• Inquiries: Nikko City Public Facilities Promotion Corporation (0288-22-6163)

Note: The opening hours of Suginamiki Park itself are not published officially. Note: The Nikko Cedar Avenue page on Nikko Tabi Navi states that the free car park has 26 spaces for ordinary cars and 3 for large buses. However, the figures are not consistent even within the official website, so please follow the signs posted on site. Note: Much of the avenue runs alongside roads still in use (such as National Route 119), so choose sections that have a pavement or a walking path.

(Sources: Nikko Tabi Navi, the official website of the Nikko City Tourism Association)