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Akagi Ohnuma Shirokuri Marathon 2023 (45th Edition) (第45回あかぎ大沼・白樺マラソン)

Japan flag
Maebashi, Gunma, Japan

calendar_today 30 Aug, 2026

directions_run Running

language Official Website

sell $28.44 – $29.70

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Akagi Ohnuma Shirokuri Marathon 2023 (45th Edition) (第45回あかぎ大沼・白樺マラソン)

About the Event

Nestled in an area where the average temperature hovers around 20 degrees Celsius even during the height of summer, this race offers a refreshing escape for runners seeking both speed and comfort. Whether you're aiming to break personal records or simply enjoying a leisurely jog through scenic routes, there's something here for every level of runner.
The event features several distance options: a challenging 20km course that caters to serious competitors looking to push their limits; a more manageable but still exhilarating 10km route suitable for those who want to test themselves over a shorter yet rigorous distance; and an accessible 5km option for runners of all ages, including families out on a fun day. Additionally, there are two family-friendly distances: the 3.2km course that's perfect for younger participants or casual joggers, and a short but sweet 1.5km run designed to introduce beginners to racing.
Entry fees vary by distance with discounts available for high school students:
- The full marathon equivalent of 20km costs ¥4700 (¥2000 for high schoolers),
- For the half-marathon style 10km and middle-distance 5km events, it's ¥4500 each (also discounted to ¥2000 for high school students),
- The shorter family-friendly courses are free of charge.
The race is known not only for its cool temperatures but also for its stunning natural scenery. Participants will enjoy running through picturesque landscapes that provide a serene backdrop, making the experience both invigorating and visually rewarding.

Races Offered

1.5km

Aug 30, 2026

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Distance — 1.5K

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Type — Running

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19 days remaining

1.5km

Aug 30, 2026

straighten

Distance — 1.5K

terrain

Type — Running

timer

19 days remaining

10km

Aug 30, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

19 days remaining

sell

$28.44

20km

Aug 30, 2026

straighten

Distance — 20K

terrain

Type — Running

timer

19 days remaining

sell

$29.70

3.2km

Aug 30, 2026

straighten

Distance — 3.2K

terrain

Type — Running

timer

19 days remaining

5km

Aug 30, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

19 days remaining

sell

$28.44

Weather History

These values represent the 3-year monthly averages for August in Maebashi.

thermostat Temperature
24.7° / 33.7°
wb_sunny Feels like
28.1° / 36.7°
light_mode Avg sunshine hours
10h 22m
water_drop Avg rainfall
5.8 mm
ac_unit Avg snowfall
—
air Avg wind speed
7.3 km/h (Light breeze)
opacity Sweat loss rate
Very high
terrain Course conditions
Hard and dry surface
sunny Max UV Index
High (7.0)
humidity_mid Humidity
72.7%
wb_twilight Sunrise
05:01
nightlight Sunset
18:32

Hotels & Places to Stay

Runner Reviews

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