An adrenaline-fuelled dive, an unforgettable swimming experience in a setting of spectacular beauty.
Come and swim to one of Cascais’ most famous and feared spots, the Boca do Inferno, also known as the “Mouth of Hell”. It is believed that it was once a cave which, over time and due to the force of the sea, eventually collapsed, giving rise to the landscape as it is known today. Today, the Boca do Inferno is an open-air cavity, with a sort of arch through which the sea water flows.
This adventure takes you on a journey to explore the Atlantic coast, swimming along the rocky stretch between the Fort of Nossa Senhora da Guia and the Santa Marta Lighthouse, making short stops to admire the stunning scenery that characterises the region.
We meet at Marina de Oeiras from where we will depart by boat to Cascais.
Arriving in Cascais, we will start our adventure, swimming about 3km to Boca do Inferno.
We will end this unforgettable experience with a boat trip back to Oeiras.
The tour usually lasts between 2 and 4 hours, including travel, preparation, briefing, swimming adventure, lunch, and rest breaks.
In case of adverse weather conditions, the tour may be postponed or canceled, with options for rescheduling or refunds. Initially, we will always try to choose an alternative swimming location.
Yes, equipment such as buoyancy aids and wetsuits may be available for rent upon prior request.
Yes. We advise hydration before and after the tour, and recommend bringing food that you are used to eating during physical activity.
Reservations are made online through our website, with instant confirmation by email. We recommend booking in advance, as groups are small.
Payment is made in full at one time.
Most of our trips can accommodate guests who cannot swim; however, please note that this is subject to availability and cannot be guaranteed.
This experience is for those who love adventure, making new friends, and feeling life pulsing in every moment! If you come with an open mind, relaxed, and eager to see the world in a different way, get ready for an unforgettable experience.
It is important to bear in mind that, as this is an adventure, unforeseen events may occur. You may encounter animals that you don't usually see in your daily life, the internet may be unstable, and the food may not be the same as your mother's, and that's okay! It is these details that make the experience special and genuine. But that's a good thing, because if everything were the same, it wouldn't be worth leaving home.
If you invite a friend to come with you, it is essential that you inform them of this. At SwimTogether, we don't want grumpy travelers. Here, a good mood and the desire to enjoy every moment are essential!
No, transfers to the meeting point are not included.
Throughout the adventure, travelers will be accompanied by SwimTogether guides. They will also travel with other participants of various ages and swimming abilities, which may include young students, retired couples, solo travelers, groups of friends, experienced open water swimmers, or people who are not used to swimming outside of a pool. Whatever the composition of the group, you can be sure that you will meet a mix of fascinating personalities from all over the world, united by a common love of swimming and nature.
All guests must be 18 years or older on the start date of our adventures or be accompanied by an adult swimmer if they are between 16 and 18 years old. The price of the experience is the same as for an adult.
You can reserve all the places for yourself and your friends. It always depends on the availability of the experience.
In our activities, we have a wide range of speeds, with participants swimming 1 km in open water in between 15 and 30 minutes. As a reference, guests should be able to swim at least 1 km in 30 minutes. The average speed in SwimTogether experiences is 15 to 20 minutes per kilometer, about 24 to 32 minutes per mile.
In private activities, you don't need to worry. The entire adventure will be tailored to your swimming level.
No. After all, you're on vacation! For private tours or small groups, we will adapt the swimming route according to your swimming level and comfort in the water. For larger groups, if you need to take a break during the swim, you can always get on the support boat at any time. On trips where we use kayaks instead of boats, the guides can advise you on the various options for getting out of the water and walking different parts of the route, whenever possible.
Most of our tours are private or in small groups. In these situations, your guide will accompany you in the water, swimming side by side and at your swimming pace.
For larger groups, each group of swimmers is accompanied by their own support boat in each session. On most adventures, these boats usually consist of a semi-rigid main boat and a kayak; however, when motorized boats cannot be used, guides accompany swimmers in support kayaks. The boats and guides are there to ensure safety, provide drinks and snacks, and help with anything you need throughout the experience.
One of the great joys of open water swimming is the opportunity to enjoy the incredible variety of wildlife, natural topography, and underwater landscapes that most people never get to see. The type of marine life you may encounter varies greatly from place to place. We have swum with everything from curious stingrays and sea lions to laid-back sea turtles and unique fish.
This experience takes place in environments where wild animals live in their natural habitat, with limited or no protection or control over their movements. Some species may be dangerous, poisonous, or unpredictable. Observing these animals is a privilege, but safety must always be a priority. You must strictly follow the guide's instructions and the existing signage.
We recommend that you consider your comfort level with wildlife and discuss any concerns with the host before the activity, especially if you have allergies, phobias, or other related health conditions.
You can send us an email and we will be happy to answer you: info@swim-together.com
This experience is fully booked. Add your guest and contact information to join the waitlist. We’ll contact you if a new availability opens up, and send you a new link to book.
