San José Marathon Costa Rica

San José, Costa Rica · December 6, 2026
partly-cloudy-day62°·73° high·Light·Dry
8
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Race Day Weather

partly-cloudy-day
62°at start
73° high
Light
Dry

Warming up, adjust pace accordingly

Runners will face temperatures rising from 62°F at the start to 72°F towards the finish, with humidity averaging 78%. Light winds from the NE may be present but should not significantly impact performance. As the race progresses, competitors should pace conservatively early on and increase hydration frequency to combat the rising temperatures in the later laps.

Race day forecast available in 19 days
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Distance: 26.2mi
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Race Info

The San José Marathon Costa Rica is an AIMS-certified road race held every December in Costa Rica's capital. The marathon covers four laps of a certified urban circuit starting and finishing at Estadio Nacional in La Sabana Park, with the half marathon running the same loop twice and the 10K on its own course. The Asociación Marathon Internacional Costa Rica has organized the race since founding it in 1993, and the December 2026 edition is its 30th running.

FAQ

When is the 2026 San José Marathon Costa Rica?

The 2026 San José Marathon Costa Rica will be held on Sunday December 6, 2026.

Is the San José Marathon Costa Rica a Boston Marathon Qualifier?

Yes, the San José Marathon Costa Rica is an official Boston Marathon qualifier.

What will the weather be like for the 2026 San José Marathon Costa Rica?

The forecast calls for a high of 74°F and a low of 61°F with a 14% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 4 years of data
Avg Temp
78°F
L:68° H:79°
RunScore
6
Conditions
Rain Freq
75%
3 of 4 yrs
Wind11mph
Dew64°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
68°/79°Light
7
2024
rain
70°/79°Light
6
2023
rain
68°/84°Light
7
2022
partly-cloudy-day
65°/76°-
7