Tokyo Marathon
Race Day Weather
Cool conditions, headwinds early
Runners will face a steady temperature from 45°F to 48°F, with average humidity at 64%. Wind will start as a headwind in the early miles (1-4) and again at 8-9, reaching up to 11 mph. To combat the challenging headwinds early, runners should consider starting conservatively and adjusting their pace accordingly, especially in the exposed stretches.
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.