Held along the Yodogawa riverbanks in Osaka, the Yodogawa Ecomarathon returns in September as a community-focused, eco-minded race weekend featuring a half marathon, 10K, 5K, and a parent–child category suitable for families and beginners. Organizers emphasize low environmental impact (encouraging use of public transport and taking your trash home), and runners should expect a mandatory pre-race course briefing and clear course marking. The flat, out-and-back riverside routes are designed for fast times and easy navigation, supported by aid stations and chip timing for accurate results. The event is listed on the Japan Ecomarathon calendar and appears on international race directories as the Osaka Yodogawa weekend entry.
Races
Also hosted by Japan Ecomarathon, the 10 km takes place on 15 September 2025 on the same Yodogawa Riverside course in Osaka, offering a fast, scenic route with simple logistics and community vibes.
Organized by Japan Ecomarathon (Running in Tokyo / ecomarathon.run), the Half Marathon is on Monday, 15 September 2025 along the Yodogawa riverbank cycling paths in Osaka, Japan, a flat, eco-friendly out-and-back setup ideal for all levels.
Weather based on historical averages.
FAQs
What is the Yodogawa Ecomarathon September 10k?
How long is the Yodogawa Ecomarathon September 10k?
Where does the Yodogawa Ecomarathon September 10k take place?
What is the elevation gain of the Yodogawa Ecomarathon September 10k?
How can I prepare for the Yodogawa Ecomarathon September 10k?
How do I choose the right training plan for the Yodogawa Ecomarathon September 10k?
Also hosted by Japan Ecomarathon, the 10 km takes place on 15 September 2025 on the same Yodogawa Riverside course in Osaka, offering a fast, scenic route with simple logistics and community vibes.
The Yodogawa Ecomarathon September 10k is 10km long.
The Yodogawa Ecomarathon September 10k takes place in Osaka, Japan.
Runna classifies the Yodogawa Ecomarathon September 10k elevation profile as Flat.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Yodogawa Ecomarathon September 10k?
Also hosted by Japan Ecomarathon, the 10 km takes place on 15 September 2025 on the same Yodogawa Riverside course in Osaka, offering a fast, scenic route with simple logistics and community vibes.
How long is the Yodogawa Ecomarathon September 10k?
The Yodogawa Ecomarathon September 10k is 10km long.
Where does the Yodogawa Ecomarathon September 10k take place?
The Yodogawa Ecomarathon September 10k takes place in Osaka, Japan.
What is the elevation gain of the Yodogawa Ecomarathon September 10k?
Runna classifies the Yodogawa Ecomarathon September 10k elevation profile as Flat.
How can I prepare for the Yodogawa Ecomarathon September 10k?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Yodogawa Ecomarathon September 10k?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Yodogawa Ecomarathon September Half Marathon?
How long is the Yodogawa Ecomarathon September Half Marathon?
Where does the Yodogawa Ecomarathon September Half Marathon take place?
What is the elevation gain of the Yodogawa Ecomarathon September Half Marathon?
How can I prepare for the Yodogawa Ecomarathon September Half Marathon?
How do I choose the right training plan for the Yodogawa Ecomarathon September Half Marathon?
Organized by Japan Ecomarathon (Running in Tokyo / ecomarathon.run), the Half Marathon is on Monday, 15 September 2025 along the Yodogawa riverbank cycling paths in Osaka, Japan, a flat, eco-friendly out-and-back setup ideal for all levels.
The Yodogawa Ecomarathon September Half Marathon is 21km long.
The Yodogawa Ecomarathon September Half Marathon takes place in Osaka, Japan.
Runna classifies the Yodogawa Ecomarathon September Half Marathon elevation profile as Flat.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Yodogawa Ecomarathon September Half Marathon?
Organized by Japan Ecomarathon (Running in Tokyo / ecomarathon.run), the Half Marathon is on Monday, 15 September 2025 along the Yodogawa riverbank cycling paths in Osaka, Japan, a flat, eco-friendly out-and-back setup ideal for all levels.
How long is the Yodogawa Ecomarathon September Half Marathon?
The Yodogawa Ecomarathon September Half Marathon is 21km long.
Where does the Yodogawa Ecomarathon September Half Marathon take place?
The Yodogawa Ecomarathon September Half Marathon takes place in Osaka, Japan.
What is the elevation gain of the Yodogawa Ecomarathon September Half Marathon?
Runna classifies the Yodogawa Ecomarathon September Half Marathon elevation profile as Flat.
How can I prepare for the Yodogawa Ecomarathon September Half Marathon?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Yodogawa Ecomarathon September Half Marathon?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Yodogawa Ecomarathon September 2025 or Japan Ecomarathon. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Yodogawa Ecomarathon September 2025 website.
