Racing on the notoriously tricky waters of Mar del Plata, the silt in the water makes the race track very difficult to read, twenty nine 420 teams from Argentina, Chile and Uruguay contested the ten-race series, through to a nail biting final race podium decider.
The host nation's Ramiro Cosentino/Agustin Frers went into the final race holding a one point advantage over Uruguay's Nicolas Radovitzky/Martín Radovitzk. As the Uruguayan partnership faltered mid-fleet to cross the line in 11th place, the Argentineans cross in 3rd place, enough to give them victory by 2 points. Third to another Uruguayan team of Juan Ignacio Regusci/Mateo Regusci.
Fourth overall and top placed girls team were Clara Vignati Garona/Emiliana López in 4th.