moderate
3–4 hours
Participants should have a moderate level of fitness and ability to swim in open water conditions.
Swim Together’s half-day swim tour takes you through the Algarve’s iconic Benagil Cave, offering a rare chance to witness towering limestone formations and vibrant marine life on a unique 3km journey.
1/2 day • 3km • Sea
Embark on an unforgettable half-day adventure swimming to the iconic Benagil Cave, renowned for its stunning limestone formations and vibrant marine life. This unique 3km journey through breathtaking sea caves and arches offers a rare opportunity to connect with nature while exploring one of the Algarve's most spectacular coastal treasures.
1/2 Day
3km
16ºC - 23ºC (61ºF - 73ºF)
Algar de Benagil, or Benagil Cave, is probably the most famous sea cave on the Algarve coast. It’s definitely one for the bucket list!
The whole coastline around this area is a haven for marine life and birds. The stunning appearance of the banded limestone rocks, make an amazing backdrop for this day trip of a lifetime! With spectacular sea caves, tunnels and breathtaking arches, Benagil and its surrounding are an open geological museum just waiting to be explored On this morning we will swim to the caves and check out this marvel of nature.
Safety
Discover the greatest sea cave in the Algarve Experience this wonder of the Algarve on this unique 3km swim. Here you will swim through caves, marine arches and incredible rock formations, in communion with the blue of the Atlantic Ocean.
Water temperatures can range from 16ºC to 23ºC; a wetsuit helps maintain warmth and buoyancy throughout the swim.
You’ll spend several hours exposed to sun reflections off limestone surfaces—apply waterproof sunscreen for skin protection.
This 3km open water swim requires basic confidence in swimming and comfort navigating sea currents and waves.
To minimize impact on marine life, choose reef-safe sunscreen and avoid harmful chemicals before entering the water.
Benagil Cave has long been a natural landmark for local fishermen and is celebrated in Algarve folklore as a shelter during Atlantic storms.
Swim Together emphasizes minimal environmental impact by maintaining small group sizes and encouraging the use of reef-safe products to protect delicate marine ecosystems.
Provides warmth and buoyancy, critical for comfortable swimming in cooler months.
spring|fall|winter specific
Protect your eyes and improve underwater visibility while navigating caves and tunnels.
Protects your skin against UV rays, especially with constant reflection from water and rocks.
summer|spring|fall specific
Helps keep your head warm and ensures visibility in the water.