The Ecomarathon de Moriguchi is a small June road race in Moriguchi, Osaka Prefecture, Japan, with a cap of 200 runners. The main event is a 10 km race for men and women, open to healthy runners above high-school age, with everyone starting at 11:00 AM and a 90-minute limit. A 5 km parent-child run is also offered for children under 15 and their guardians, intended more for sharing the course than for competition.
This is a local event suitable for beginners, not a large city race. The parent-child run is not recorded and has no awards; families note the finish clock or their own watch. The simple setup, short distances, and small field make it a straightforward way to run in Moriguchi without the pressure of a large marathon weekend.