Boca do Inferno Swim Tour - Half Day (Special Edition)

This half-day swimming adventure takes place along the stunning Atlantic coast near Cascais, Portugal, offering an adrenaline-filled experience for participants of all skill levels. The tour begins at Marina de Oeiras, where guests are transferred by boat to Cascais to start their swim. Participants will explore the rocky coastline between the Fort of Nossa Senhora da Guia and the Santa Marta Lighthouse, enjoying small stops to take in the spectacular scenery. The main highlight of the tour is swimming to Boca do Inferno, a famous natural arch known as the “Mouth of Hell,” formed over time by the force of the sea. This area, once a cave, now provides an open-air passage where seawater flows into the cavity, creating dramatic waves and breathtaking views. The swim covers approximately three kilometers, providing both excitement and an opportunity to enjoy the unique marine environment of the region.

The experience includes safety measures, personal accidents insurance, and the guidance of experienced local swim instructors, ensuring a secure and enjoyable adventure. Participants are also supported by boats and kayaks throughout the journey. A water bottle and a typical regional cake are provided to keep energy levels up. The tour ends with a boat return to Marina de Oeiras, where participants can relax and reflect on the stunning coastal views and the unforgettable experience of swimming to one of Cascais’ most iconic natural landmarks.