Get ready for the Saïko Ecomarathon, a sporting experience in December in the heart of Saitama Prefecture in Japan 🇯🇵. It's precisely in the city of Toda, by the Lake Sai, in the Doman Green Park, where you'll start at 11 AM sharp! 🕚 Therefore, you're set for two races of your choice: a half-marathon or a 10 km, both in the format of a loop. If you came with family 👨👩👧👦, a 5 km parent-child race is organized. The course also takes the format of a loop 🔂. You can enjoy a route surrounded by lakes, ponds, and magnificent nature 🍃. You will be immersed in a peaceful and inspiring environment, perfect for breaking your personal record or simply enjoying 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 concerned about the environment 🌳 and committed to various causes 🎗️. This year, it is possible to donate to the international refugee aid association: Second Harvest Japan. Japan's first food bank, the organization is committed to ensuring everyone has access to food 🍲.
Despite its urbanization, the Saitama Prefecture remains significant for its agriculture. It includes vegetable 🥦, rice 🍚, and tea 🍵 productions. There, you can taste the famous Sayama tea, Udon and Chichibu Soba, or Senbei from Sōka. Once you’ve regained your strength, why not do some tourism ? Located in Omiya, the Hikawa Shrine is one of the oldest and most respected 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 that will please you. For a great family outing, do not hesitate to visit the Tobu Zoo to admire its animals 🐼 and try its roller coasters 🎡. If you're just passing by for the day, Tokyo, the capital of the country, is only 20 minutes away. Whether you are interested in traditional culture, fashion, cuisine 🥢, or simply the hustle and bustle of urban life, you're unlikely to get bored! 😉
Don't miss this opportunity to combine sports, nature, and cultural discovery in a stunning region of Japan! 🎐 Sign up now and get ready to have an unforgettable experience at the Saïko Ecomarathon 🎏.
A parent-child race 🧑🧑🧒🧒 is organized during the day, with the start at 11 AM sharp 🕚. It is accessible to children up to 15 years old.
Bib pickup will be on-site on race day from 9 AM to 10:30 AM.
The races will start at 11 AM on December 28, 2025, at Doman Green Park.
Half Marathon: the time limit is 3 hours
10 km: the time limit is 1 hour 30 minutes
You will find a designated area to store your luggage on-site (but no lockers, you will be entirely responsible for your valuables). Remember to bring a 45L garbage bag to protect your belongings in case of rain.
If you have any other questions, you can contact the organizers at the following email address: ecomarathon@runningtokyo.com
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