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San José Marathon Costa Rica

December 6, 2026 · 5:00 AMSan José, San José Province, Costa Rica

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Race snapshot

Race Day

66°F

61–75°F · Feels mild

Total elevation gain

492ft

Relatively flat course · Net elevation change +66 ft

Participants

3,000

Medium-sized race

Crowd Rating

6/ 10

Good crowd energy

The Lowdown

The San José Marathon Costa Rica is the country's flagship AIMS-certified marathon, organized by the Asociación Marathón Internacional Costa Rica since 1993. The 2026 edition marks roughly three decades of the race and runs through the heart of the capital, passing landmarks such as the National Theater and La Sabana Park with views toward the surrounding volcanoes. The event offers 42K, 21K, 10K, and 5K distances plus a four-person marathon relay, drawing runners from Costa Rica and abroad for an early 5:00 a.m. start to beat the tropical heat.

01: AIMS (Association of International Marathons and Distance Races) full member race, certifying course accuracy and international standards.
02: Organized by the Asociación Marathón Internacional Costa Rica (Costa Rica Marathon Association), founded in 1993 and affiliated with FECOA (Federación Costarricense de Atletismo).
03: Entry cap of approximately 3,000 total runners across all distances per the official registration page (2026 edition).

Prepare for This Race

Pace CalculatorPlan splits for marathon Race PredictorPredict your marathon time BQ CalculatorBQ-eligible course Fuel PlannerPlan nutrition for marathon, moderate weather Difficulty Analyzer492ft gain, 66°F avg, marathon Training PacesTraining zones for marathon

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