MarathonRoad🇯🇵 Tateyama, Japan

Tateyama Wakashio Marathon

Sunday, 31 January 2027In 4 months · Start 10:00

A mid-winter marathon from the municipal sports ground in Tateyama, at the southern end of the Boso Peninsula in Chiba, now in its 47th edition.

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Facts checked 10 Oct 2026 against runjapan.jp.

Elevation gain

200 m

Rolling · ↓ 200 m

Start altitude

6 m

above sea level, from terrain data

Temp at start

9°C

Peaks around 10°C

Entry fee

≈ $60

Open entry

Finishers

—

typical year

Course

Loop

6h cut-off

Getting thereFly into HND (Tokyo), about 63 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Rolling: about 200 m of climbing and 200 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

9°C

Peak during race

10°C

Humidity

53%

Chance of rain

11%

Wind

18 km/h

Race day in past years

Historical averages for 31 January ±3 days, 2016–2025, from 10:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

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<a href="https://irun42.com/race/tateyama-wakashio" title="Tateyama Wakashio Marathon on iRun42"><img src="https://irun42.com/badge/tateyama-wakashio.svg" width="300" height="120" alt="Tateyama Wakashio Marathon: course, elevation and race-day weather on iRun42" /></a>