Half marathonRoad🇯🇵 Tokyo, Japan

Tokyo New Year Half Marathon

Sunday, 10 January 2027In 3 months · Start 09:30

A flat, fast half on the paved riverside paths of the Arakawa in Kita-ku, run in staggered starts of 1,200 runners. A popular early-season PB race in Tokyo.

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Facts checked 10 Oct 2026 against runjapan.jp.

Elevation gain

20 m

Flat · ↓ 20 m

Start altitude

5 m

above sea level, from terrain data

Temp at start

4°C

Peaks around 9°C

Entry fee

≈ $55

Open entry

Finishers

—

typical year

Course

Out and back

2.5h cut-off

Getting thereFly into HND (Tokyo), about 27 km from the start

Course map

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

Elevation profile

Flat: about 20 m of climbing and 20 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

4°C

Peak during race

9°C

Humidity

52%

Chance of rain

Wind

12 km/h

Race day in past years

Historical averages for 10 January ±3 days, 2016–2025, from 09:30 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/tokyo-new-year-half" title="Tokyo New Year Half Marathon on iRun42"><img src="https://irun42.com/badge/tokyo-new-year-half.svg" width="300" height="120" alt="Tokyo New Year Half Marathon: course, elevation and race-day weather on iRun42" /></a>