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 3rd Douro Valley – São João da Pesqueira Open Water takes place on September 13, 2026, at Cais da Ferradosa, on the River Douro. The event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in river conditions in the Douro Valley, the competition features a 3000m official Circuit race for Open Water (AA) and Masters AA swimmers, alongside a 500m promotional distance. The race contributes to the national ranking standings.

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.

The Sesimbra Bay Open Water Crossing takes place on October 5, 2026, in Sesimbra Bay. The event is part of the XIX National Open Water Circuit 2025–2026, organized under the Portuguese Swimming Federation (FPN).

Held in Atlantic sea conditions within the sheltered bay of Sesimbra, the competition features a 2500m official Circuit race for Open Water (AA) and Masters AA swimmers, alongside a 1500m promotional distance. The race contributes to the national ranking standings.