Itabashi City Marathon
Race Day Weather
Cool start, moderate wind ahead
Runners will face a temperature range of 49°F to 54°F during the race, with a light rain expected at 0.02 in/hr. Wind will be a consistent headwind at 14 mph, making pacing adjustments necessary. Given the humidity at 60%, a conservative start is advised to manage energy efficiently.
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Race Info
The Itabashi City Marathon runs along the Arakawa riverbed in northern Tokyo, an out-and-back course starting and finishing upstream of Toda Bridge in Itabashi Ward with a turnaround near Arakawa Ohashi Bridge. The course is certified by the Japan Athletics Federation and authenticated by World Athletics as record-eligible, with a flat, minimal-elevation layout along the river levee. The marathon caps entries at 10,000 runners and sets a 7-hour course time limit. The 2027 race is the event's 30th edition.
