The XI Senhora d’Agonia International Open Water Meeting takes place on September 6, 2026, in Viana do Castelo. This international event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in Atlantic sea conditions, the competition includes a 4000m official Circuit race for Open Water swimmers, a 2000m Masters Circuit race, and additional 2000m and 500m promotional events. The race contributes to national ranking standings and maintains its international character within the open water

The XIV Rio Tua Open Water Crossing takes place on September 12, 2026, in Mirandela, on the River Tua. The event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in river conditions, the competition features a 3000m official Circuit race for Open Water (AA) and Masters AA swimmers, alongside 1500m and 400m promotional distances. The race contributes to the national ranking standings.

The 5th Douro Bridges Porto & Gaia Open Water takes place on September 20, 2026, on the River Douro, between Porto and Vila Nova de Gaia. The event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in river conditions under the iconic Douro bridges, the competition features a 4000m official Circuit race for Open Water (AA) and Masters AA swimmers. The race contributes to the national ranking standings and offers a unique urban open water experience

The XXXVI Templars Open Water Crossing takes place on September 27, 2026, at Praia Fluvial de Vila Nova, in Tomar. The event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in river conditions on the River Nabão, the competition features a 5000m official Circuit race for Open Water (AA) and Masters AA swimmers, alongside 1500m and 400m promotional distances. The race contributes to the national ranking standings and is one of the longest-running open water events in Portugal.