Ecomarathon Nikotama d'Avril

The Ecomarathon Nikotama d'Avril takes place on 11 April 2027 in Setagaya, Tokyo, in the Futako-Tamagawa district on the banks of the Tama River. Runners start at 11am from the park beside the Futako-Tamagawa bridge for a half marathon or a 10 km, both run on a loop course. A 5 km parent-and-child race, also on a loop, lets families take part together.

The route passes through a peaceful setting of lakes and ponds, and the field is deliberately limited to around 300 runners. The event is part of a series of races held in several Japanese prefectures that supports charitable and environmental causes, including food aid and refugee support organisations.