2026 Mito Komon Manyu Marathon - Oct 25 Countdown

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Race Information

Race	2026 Mito Komon Manyu Marathon - Oct 25
City	Mito
Date	2026-10-25 at 09:00
Field Size	~10,000 runners
Time Limit	6 hours
Cutoff pace	8:32/km
Timezone	Asia/Tokyo
Official Site	Mito Komon Manyu Marathon Organizing Committee (水戸黄門漫遊マラソン実行委員会)

Race Day Weather

Average Temperature	15.5°C / 60°F
Humidity	81%
Wind	15.5 km/h
Rain Chance	37%
Typical Conditions	Pleasant mid-autumn weather in northern Kanto, typically 14-18C at the 9:00 AM start, climbing toward low-20s by midday, with a modest chance of an October shower.

What to Prepare: Dress for a cool start that warms quickly: a short-sleeve top with a throwaway layer at the line works well, and pack a light cap in case an autumn shower passes over Lake Senba.

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 15.5 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	12.6°C	15.4°C	18.1°C
Dew point	8.3°C	12.2°C	16.1°C

Wet-day chance: 37% Runnability: 73/100

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

Course Profile

Course Type	Loop city road marathon
Elevation Gain	90m
Terrain	Road
Profile	A flat, fast course through central Mito with only gentle rises, looping past Kairakuen garden, the Art Tower Mito and the wooded shore of Lake Senba.
Boston Qualifier	Yes — Check your BQ time

Prepare for 2026 Mito Komon Manyu Marathon - Oct 25

Use our free training tools to get race-ready:

Running Pace Calculator — Min/km, Finish Time & Pace Chart

Free running pace calculator for 5K, 10K, half marathon, and marathon. Get min/km or min/mile, your ...

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Free Pace Band Generator — Printable Race Day Wristband

Free printable pace band for marathon, half marathon, or custom distance. Choose even, negative, or ...

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Marathon Wake-Up Time Calculator — Race Morning Timeline

7 AM race, wake at 3:45 AM? Enter the gun time; we work backward through meal, gear, bathroom, warm-...

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Marathon Predictor — 5K, 10K & Half Marathon Race Predictor

Free marathon predictor — convert your 5K, 10K, or half marathon time into race-day estimates from R...

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Race Finish Time Calculator & Predictor — Free

Predict your race finish time from pace, or set a goal time to find required pace. Free instant calc...

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Heart Rate Zone Calculator — 5-Zone Training Guide

What heart rate should you train at? Enter your age and resting HR to get personalized 5-zone traini...

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Frequently Asked Questions

When and where is the Mito Komon Manyu Marathon 2026?

The 11th Mito Komon Manyu Marathon is held on Sunday, October 25, 2026, with a 9:00 AM start. It is a loop course through central Mito City in Ibaraki Prefecture, starting near the Minami-machi intersection and finishing by the Ibaraki Prefectural Government building, winding past the famous Kairakuen garden, the Art Tower Mito and the wooded shore of Lake Senba.

How do I enter the Mito Marathon, and is there a lottery?

There is no lottery: entry is first-come, first-served, so the 10,000 full-marathon places can fill before the deadline. Resident pre-entry opens in mid-April and general entry runs from late April through the end of June via the official site and RUNNET. The standard full-marathon entry fee is 10,000 yen. Set a realistic target before you sign up with our race time predictor.

What is the time limit and is the course beginner-friendly?

The time limit is 6 hours (gross), with staged checkpoints along the way — for example the 9.5 km point closes at 1:40 and the 38.5 km point at 5:30. Six hours is a touch firmer than the most relaxed Japanese races, but the flat, fast layout makes Mito a popular first marathon. Plan even pacing with our pace calculator so you stay ahead of the cutoffs.

Is the Mito Marathon a Boston-qualifying race?

Yes. The course is certified by the Japan Association of Athletics Federations (JAAF / 日本陸連公認) and is World Athletics certified, so an official chip time counts toward Boston Marathon qualifying if you meet your age-group standard. Check where you stand with our Boston qualifying calculator.

What makes the course special?

The race is themed around Mito Komon (Tokugawa Mitsukuni), the region's beloved historical lord, and the route showcases Mito's landmarks: Kairakuen, one of Japan's three great gardens, the Art Tower Mito and the autumn foliage around Lake Senba. A highlight near the finish is the lakeside cheering tunnel, where local students line the road to roar runners home.

Do I need a visa or travel authorization to run as a foreign visitor?

Many nationalities (US, UK, EU, Australia and others) can enter Japan visa-free for short tourist stays; confirm your own nationality's rule before booking. Japan does not currently require an ESTA or eTA. Mito is about 70-80 minutes from Tokyo by limited express train, so a race-weekend trip is easy to arrange.

What is the weather usually like in late October?

Late October in northern Kanto is comfortable autumn running weather, often 14-18C at the start and warming into the low 20s by midday, with a modest chance of rain. Pack a throwaway layer for the start line and a light cap in case a shower blows through along the lake.