Portrunny is a quiet marina tucked into the northwest corner of Lough Ree, one of the largest lakes on the Shannon–Erne waterway system.

It offers a good service block and a children's play area, though there are no shops or restaurants in the immediate vicinity.

Portrunny Bay is also noted as a productive coarse-fishing spot, with bream, roach, and hybrids drawn to its shallow, sheltered waters.