Nagano Marathon

Nagano, Japan · April 18, 2027

51°·60° high·Light·Rain possible

Weather

Race Day Weather

51°at start

60° high

Light

Rain possible

Your goal

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Cool start, warming finish

Runners will face temperatures rising from 51°F at the start to 60°F by the end, with a light breeze from the SW. Humidity is manageable at 47%, but runners should remain vigilant for light rain. It's advisable to pace conservatively early on, especially as temperatures rise.

Race day forecast available in 159 days

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Distance: 26.2mi

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Race Info

The Nagano Marathon is an annual marathon held in Nagano, Japan, on a Sunday in mid-to-late April. The course starts at Nagano Sports Park and finishes at Nagano Olympic Stadium, passing Zenko-ji Temple and several venues built for the 1998 Nagano Winter Olympics. It is certified by the Japan Association of Athletics Federations and World Athletics (AIMS) and is a Boston Marathon qualifier. Entry is capped at 10,000 runners with a five-hour course cutoff.

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Course Map

FAQ

When is the 2027 Nagano Marathon?

The 2027 Nagano Marathon will be held on Sunday April 18, 2027.

Is the Nagano Marathon a Boston Marathon Qualifier?

Yes, the Nagano Marathon is an official Boston Marathon qualifier.

What is the time limit for the Nagano Marathon?

The time limit for the Nagano Marathon is 5 hours.

What will the weather be like for the 2027 Nagano Marathon?

The forecast calls for a high of 61°F and a low of 43°F with a 15% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 10 years of data

Avg Temp

57°F

L:52° H:62°

RunScore

Conditions

Rain Freq

10%

1 of 10 yrs

Wind6mph

Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Nagano Marathon Partly cloudy throughout the day. 2026	54°/68°	-	46°
2025 Nagano Marathon Cloudy skies throughout the day with late afternoon rain. 2025	62°/72°	-	54°
2024 Nagano Marathon Cloudy skies throughout the day. 2024	56°/63°	-	46°
2023 Nagano Marathon Partly cloudy throughout the day. 2023	46°/56°	-	23°
2022 Nagano Marathon Partly cloudy throughout the day with late afternoon rain. 2022	41°/59°	-	35°
2019 Nagano Marathon Partly cloudy throughout the day. 2019	47°/59°	-	37°
2018 Nagano Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2018	53°/55°	Light	52°
2017 Nagano Marathon Partly cloudy throughout the day. 2017	52°/73°	-	38°
2016 Nagano Marathon Partly cloudy throughout the day with afternoon rain. 2016	59°/64°	-	46°
2015 Nagano Marathon Partly cloudy throughout the day with late afternoon rain. 2015	47°/56°	-	34°

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