The Zamora Sprint Triathlon is a short swim-bike-run event held at Playa de los Pelambres in Zamora, incorporating the Duero River into its course. Typically held in early June, the main sprint race contributes to the Castilla y León regional triathlon standings. This event is organized by the Zamora City Council, the Castilla y León Triathlon Federation, and Club Deportivo Triatlón Duero.
The start and finish line are located at Los Pelambres, connecting the race directly to the riverfront instead of a stadium environment. Past events have featured a Promotion Triathlon, a Children’s Aquathlon, youth regional championship races, and Spanish University Championship competitions. These attract club athletes, younger participants, university competitors, and top-level triathletes to the same weekend. The main race has a history of filling up rapidly; one noted edition sold out within days.