San José Marathon Costa Rica
Race Day Weather
Comfortable temps, warming through the race, chance of rain
Starting at 62°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temperatures rising to 73°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready. Moderate humidity at 79% is worth noting for effort level, especially in later miles.
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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.
