Tokyo Marathon
Race Day Weather
Cool start, moderate wind challenge
Runners will face a cool start at 45°F, rising to 48°F by race's end. Winds will peak at 11 mph with headwinds impacting segments from miles 1-4 and 8-9, while tailwinds will aid in miles 10, 13, and 16-22. With humidity at 64%, maintaining hydration is crucial, and runners should adjust their pace during the headwind stretches for optimal performance.
Pace Calculator
Get forecast alerts for Tokyo Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Tokyo Marathon race plan
Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
The Tokyo Marathon starts at the Tokyo Metropolitan Government Building in Shinjuku and finishes at Tokyo Station, passing the Kaminarimon Gate in Asakusa on a mostly flat course. Benson Kipruto set the men's course record of 2:02:16 in 2024 and Brigid Kosgei set the women's course record of 2:14:29 in 2026. It's one of the seven Abbott World Marathon Majors and a World Athletics Platinum Label race, held on the first Sunday of March. It is Japan's largest marathon, with a 40,000-runner field filled by lottery.