Step into the vibrant heart of Osaka this September and immerse yourself in the unique atmosphere of the Yodogawa Ecomarathon, held in the picturesque district of Yodogawa. This annual race offers runners an unforgettable experience along the serene banks of the Yodo River. The event caters to a variety of preferences, whether you're looking for solo competition or family fun. Competitors can choose from a half-marathon, a timed 10 km run, and even a parent-child 5 km race designed specifically for families. All races commence at precisely 11am in the bustling heart of Osaka. The route follows a flat, easy-to-navigate bike path alongside the Yodo River, making it ideal for both novice runners aiming to build confidence and experienced athletes seeking personal bests. With a limited number of participants—only 300 spots available—the race ensures an intimate setting without overcrowding at the start line. Beyond athletic competition, the Ecomarathon stands out as a socially conscious event with environmental commitments and support for various causes. This year’s edition includes opportunities to donate directly to Second Harvest Japan—an international organization dedicated to ensuring food security across communities. Osaka itself is a city rich in history yet ever-evolving, blending traditional culture seamlessly with modern amenities. From world-renowned cuisine and vibrant shopping districts to cultural landmarks like the Shin-Osaka Station Museum and Kazaki Shrine, there's plenty for every visitor to explore beyond race day. Whether you're planning an extended stay or simply attending the event, Osaka offers a unique blend of experiences that cater to all interests—from traditional sentō (public baths) and onsen (hot springs) to contemporary entertainment options. Join us at the Yodogawa Ecomarathon this September for a race like no other in one of Japan's most dynamic cities. The event promises an engaging blend of running, scenic beauty, cultural immersion, and community spirit that will leave you with memories to cherish long after crossing the finish line.
Races Offered
Course sur route 10 km
Sep 23, 2026
straighten
Distance —
10K
terrain
Type —
Running
timer
11:00
sell
$43.20
Course sur route 5 km
Sep 23, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
11:00
sell
$0.00
Semi-Marathon
Sep 23, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
11:00
sell
$54.00
Weather History
These values represent the 3-year monthly averages for September in Osaka.
thermostatTemperature
23.7° / 31.5°
wb_sunnyFeels like
26.7° / 33.5°
light_mode
Avg sunshine hours
9h 48m
water_drop
Avg rainfall
4.5 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
9.7 km/h (Light breeze)
opacity
Sweat loss rate
Very high
terrain
Course conditions
Hard and dry surface
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
74.4%
wb_twilight
Sunrise
05:40
nightlight
Sunset
18:04
About Osaka
Learn more about the host city, Osaka.
Ōsaka (大阪) is the beating heart of Japan's Kansai region and the largest of the Osaka-Kobe-Kyoto trio of cities, with a population of over 17 million people in the greater metropolitan area. With fantastic food and nightlife, great connectivity and accommodation options in every price bracket, it makes a great base for exploring the entire region.