2026 Aoshima Taiheiyo Marathon - Dec 13

2026 Aoshima Taiheiyo Marathon - Dec 13 Countdown

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Race Information

Race2026 Aoshima Taiheiyo Marathon - Dec 13
CityMiyazaki
Date2026-12-13 at 09:00
Field Size~10,800 runners
Time Limit6 hours 20 min
Cutoff pace9:00/km
TimezoneAsia/Tokyo
Official SiteAoshima Taiheiyo Marathon Organizing Committee (青島太平洋マラソン実行委員会)

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Race Day Weather

Average Temperature6.3°C / 43°F
Humidity83%
Wind11 km/h
Rain Chance22%
Typical ConditionsMild, sunny southern-Kyushu winter weather, typically 8-15C at the 9:00 AM start, usually dry with a light breeze off the Pacific — among the warmest, most comfortable December marathons in Japan.

What to Prepare: December in Miyazaki is gentle by Japanese-winter standards, but the start is cool and the sun climbs fast. Race in shorts and a light singlet with arm sleeves you can shed, and bring a cap and sunscreen for the exposed coastal Tropical Road.

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 11 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 1.8°C 5.7°C 11.3°C
Dew point -1.9°C 2.5°C 9.4°C
Wet-day chance: 22% Runnability: 71/100

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

Course Profile

Course TypeOut-and-back road marathon
Elevation Gain26m
TerrainRoad
ProfileOne of Japan's flattest marathons — a fast, near-level loop with only about 26 m of total elevation gain. The route runs out from the Hinata Miyazaki Prefectural Sports Park through the city center and Miyazaki Shrine area, then south down the palm-lined Tropical Road toward Aoshima island before turning back to the same stadium finish.
Boston QualifierYes — Check your BQ time

Prepare for 2026 Aoshima Taiheiyo Marathon - Dec 13

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Frequently Asked Questions

When and where is the Aoshima Taiheiyo Marathon 2026?

The 40th Aoshima Taiheiyo Marathon is held on Sunday, December 13, 2026, with a 9:00 AM start. The full marathon starts and finishes at the Hinata Miyazaki Prefectural General Sports Park, looping through central Miyazaki and out along the Pacific coast toward Aoshima island in southern Kyushu.

How do I enter, and is there a lottery?

There is no lottery — full-marathon entry is first-come, first-served and closes as soon as the 10,800 quota is filled. For 2026, registration ran mid-June (June 17–30) and the full marathon has since sold out — entry is now closed, having reached its 10,800 cap. The entry fee was 13,500 yen. For 2027, sign up the moment entry opens in mid-June; set a realistic goal first with our race time predictor.

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

The time limit is 6 hours 20 minutes, with intermediate checkpoints along the way. Paired with one of the flattest profiles of any Japanese marathon, that makes it a strong choice for a first marathon or a winter PR attempt. Plan even splits on the level Tropical Road with our pace calculator.

Is the Aoshima Taiheiyo Marathon a Boston-qualifying race?

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

What makes this race worth traveling for?

It is one of the warmest, most scenic winter marathons in Japan. Runners follow the palm-lined Tropical Road with the Pacific on one side and are cheered the whole way by roughly 2,500 high-school student volunteers, whose taiko, dance and shouting squads have become the event's signature. Miyazaki's mild December climate and resort feel make it a destination race rather than a grind.

How do I get to Miyazaki as an overseas runner?

Miyazaki has its own airport with direct domestic flights from Tokyo, Osaka and Fukuoka, plus some international connections; Fukuoka is the main rail gateway into Kyushu. Many nationalities can enter Japan visa-free for short tourist stays, and Japan does not currently require an ESTA or eTA — confirm your own nationality's rule before booking.

What is the weather usually like in mid-December?

Southern Kyushu stays mild in December. Expect roughly 8-15C at the start, generally dry and sunny with a light Pacific breeze — closer to ideal racing weather than the cold, snowy conditions on much of Honshu. Dress for a cool start you can race in, and bring sun protection for the open coastal stretch.

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