Eco Nado — Pilar

In 1820, the Treaty of Pilar was signed within these lands, marking a decisive moment in the formation of the Argentine federal system. The ink had barely dried on those pages before the Luján River became the silent witness to the political consolidation of the province. Today, the water that once framed this historical negotiation hosts the Eco Nado Pilar, inviting swimmers to navigate the same basin where regional history was forged. The event transforms the river, turning a quiet riparian setting into a competitive course for the 1500m and 3000m distances.

Race day logistics

The annual edition, scheduled for October 24, 2026, focuses on the specific flow dynamics of the river system in the Buenos Aires province. Unlike open coastal water, the current here requires consistent sighting to maintain the line amidst the vegetation and riverbanks. The organizers manage the logistics to ensure the safety of the swimmers throughout the 3000m stretch, balancing the natural pace of the river with the requirements of a timed competition. Swimmers arriving in Pilar find an environment defined by the river’s slow movement, which remains the primary challenge for those aiming to optimize their time in the water.