2026 Yokohama Marathon - Oct 25 Countdown

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Race Information

Race	2026 Yokohama Marathon - Oct 25
City	Yokohama
Date	2026-10-25 at 08:30
Field Size	~25,000 runners
Time Limit	6 hours 30 min
Cutoff pace	9:15/km
Course speed	Challenging course Speed index 1.07 — median of the last 4 winners' times against the global same-year median. Winner times track elite fields and prize money, so this reads the course as a proxy, not a pure measurement.
Timezone	Asia/Tokyo
Official Site	Yokohama Marathon Organizing Committee
Fee trend	2019 ¥15,0002023 ¥20,0002024 ¥18,5002025 ¥18,5002026 ¥18,500(7-yr +23.3%)· below industry avg (+1.9% vs +4.9%/yr)
International	¥25,000 · 1.4× domestic

Race Day Weather

Average Temperature	14.4°C / 58°F
Humidity	84%
Wind	17.7 km/h
Rain Chance	33%
Typical Conditions	Mild autumn weather with coastal breeze

What to Prepare: Comfortable October temperatures along the bay. Expect sea breeze along the Minato Mirai waterfront — refreshing but can slow you on exposed stretches. A great PR-attempt course if you manage the wind sections strategically.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 17.7 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

	Cooler	Typical	Warmer
Temperature	11.5°C	14.5°C	17.3°C
Dew point	7.4°C	11.6°C	15.4°C

Wet-day chance: 33% Runnability: 73/100

Recent actuals: 2023 17.1°C / 2024 19.9°C / 2025 16°C (morning avg)

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course Type	Coastal Urban Loop
Elevation Gain	45m
Terrain	Paved city roads
Profile	Course runs along Yokohama Bay with views of the iconic Yokohama Bay Bridge, through the modern Minato Mirai district, and past the historic Red Brick Warehouse. Mostly flat with slight undulations near Yamashita Park.
Boston Qualifier	Yes — Check your BQ time