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Ecomarathon de Saïko

Running · Saitama, Japan · Sunday, October 25, 2026

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Toutes les courses

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running

Running

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About this event

Get ready for the Saïko Ecomarathon in October, in the heart of Saitama (Toda) near Lake Sai, in Doman Green Park. Two looping courses at 11:00 a.m.: a half marathon or a 10K, plus a 5K parent-child race. Enjoy a route surrounded by lakes and nature, perfect for beating your personal best or savoring every stride, and discover a city that is both sporty and verdant in Japan.

Get ready for the Ecomarathon Saiko, an October sports experience in the heart of Saitama Prefecture in Saitama in Japan 🇯🇵. It’s located in the city of Toda by the shores of the Sai Lake, in the Doman Green Park, where you’ll start at exactly 11:00 AM! 🕚 So you’re set for two race options: a half marathon or a 10 km, all in a loop format. If you’re coming with family 👨‍👩‍👧‍👦, there’s a 5 km parent-child race on offer. The course also forms a loop 🔂. You’ll enjoy a route surrounded by lakes, ponds and nature so beautiful 🍃. You’ll be immersed in a peaceful and inspiring environment, perfect for beating your personal best or simply savoring every stride 💪.

With several other sporting events organized, especially in the prefectures of Saitama, Osaka, Hiroshima, Kyoto and Kumamoto (but mainly in Tokyo 🌸) the Ecomarathon positions itself as an organization that cares about the environment 🌳 and is committed to various causes 🎗️. This year, you can make a donation to the International Refugee Aid Association : Second Harvest Japan. As Japan’s first food bank, the organization works to ensure everyone has access to food 🍲.

Despite its urbanization, the Saitama Prefecture remains important for its agriculture. You’ll find vegetables 🥦, rice 🍚 and tea 🍵. You can sample the famous Sayama tea, udon Udon and Chichibu Soba or even Sōka Senbei. Once you’ve refueled, why not do some tourism ? In Omiya, Omiyaand the Hikawa Shrine in Kawagoe is one of the oldest and most revered Shinto shrines in Japan. To learn more about Japanese culture 🫰, the Saitama Prefectural Museum of Art is full of various collections of Japanese and Western art 🖼️. If you don’t have time to extend your stay, the city of Toda also offers activities you’ll enjoy. For a great family outing, don’t miss a visit to the Tobu Zoo to see its animals 🐼 and try its rollercoaster 🎡. If you’re just in town for the day, Tokyo, the country’s capital, is only 20 minutes away. Whether you’re into traditional culture, fashion, cuisine 🥢 or simply the buzz of urban life, you’ll likely have plenty to enjoy! 😉

Don’t miss this chance to combine sport, nature and cultural discovery in a stunning region of Japan! 🎐 Sign up now and get ready for an unforgettable experience at the Ecomarathon Saïko 🎏.

Options & prices

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Prices are provided for information only — check the exact terms with the event organiser.

When

On Sunday, October 25, 2026

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Questions about this event

Answers to your questions

Ecomarathon de Saïko is a running event in Saitama over 5 km, 10 km, and 42.2 km, taking place on Sunday, October 25, 2026. Find all the practical details — location, schedule and prices — directly on this page.

Ecomarathon de Saïko offers several distances to choose from: 5 km, 10 km, and 42.2 km. Check the exact course details with the organiser, especially when several formats take place on the same day.

Ecomarathon de Saïko takes place at Saitama. You will find its exact location and links to Google Maps and Waze further down this page.

Ecomarathon de Saïko takes place on Sunday, October 25, 2026. Check the exact schedule with the organiser, as times may vary by category or format.

Ecomarathon de Saïko is free to enter, with no participation fee expected. This information may change, so check it with the organiser.

No participant limit has been provided for Ecomarathon de Saïko. The number registered through Goya is visible on this page, but this information may change. If in doubt, contact the organiser.

To take part in Ecomarathon de Saïko comfortably, plan training suited to running, wear appropriate clothing and bring any equipment recommended by the organiser.

Ecomarathon de Saïko is organised by Toutes les courses. For questions about the rules, access or accommodation, contact the organiser directly.

The weather forecast for the location and date of Ecomarathon de Saïko is available higher up on this page and is updated as the event approaches.

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Where the event takes place

Saitama, Japan

This event page is provided for informational purposes only to help users discover sporting events. Goya is not affiliated with, endorsed by, or sponsored by the organiser of this event or any associated brands unless explicitly stated otherwise. The information displayed is compiled from publicly available sources and may change at any time. Goya does not use any official logos, protected images, or other proprietary content belonging to the event organiser unless expressly authorised. Any names or trademarks mentioned are used solely for descriptive purposes to identify the event. For the most accurate and up-to-date information, including event details, rules, registration, entry fees, and official announcements, please visit the event’s official website.

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