Course & Elevation
The San José Marathon Costa Rica is a city marathon in the capital, held on a Sunday in early December, with the start and finish at the Estadio Nacional in the Parque Metropolitano La Sabana. It is organised by the non-profit Asociación Marathon Internacional Costa Rica and was first held in 1995. The marathon is four laps of a 10.5 km base circuit that the organisers say is certified by AIMS and World Athletics. The route, as described for 2025, leaves the north side of the stadium, climbs Boulevard Las Américas to the León Cortés statue and follows Paseo Colón and Avenida Segunda to a turnaround, then returns past the Gimnasio Nacional and takes the Próspero Fernández highway toward Pavas before coming back along Boulevard Ernesto Rohrmoser to the stadium. A half marathon, a 10K, a 5K and a relay run on the same morning, and the race starts at 6:00 am. The 29th edition in December 2025 drew more than 3,000 participants from 35 countries, and the 30th edition is scheduled for 6 December 2026. The organisers report that times run here are valid for Boston qualifying. San José should not be confused with the separate Gran Maratón Costa Rica or the Maratón San José BCR run by the city in June.
Course Facts
Weather
Typical climate for the race month — an estimate, not a forecast or a race-day record
22°C
Temperature
74%
Humidity
26%
Rain Chance
December in San José is the start of the dry season: average highs are around 28°C and lows around 18°C, with about eight days of measurable rain in the month.
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