Maratón Internacional de San Juan
Race Day Weather
Cold start — layer up, big temp swing
Runners will start in chilly 39°F conditions — dress in layers for the corral and plan to shed early. Temps will climb significantly to 68°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 73% is worth noting for effort level, especially in later miles.
Pace Calculator
Get forecast alerts for Maratón Internacional de San Juan
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Maratón Internacional de San Juan (San Juan International Marathon) is an annual marathon in San Juan, Argentina, first held in 2016. The point-to-point course starts at Dique Punta Negra in the Zonda foothills near 979 meters of elevation and descends through the Quebrada de Zonda and the town of Rivadavia to finish at the Teatro del Bicentenario in downtown San Juan near 639 meters. The 42K and 21K distances carry a World Athletics (AIMS) Grade B course-measurement certificate, and the race weekend also includes 10K and 5K events. It is a Boston Marathon qualifier.
