Open Water Swimming Route ¿ La Isla (Mazarrón)
- Ruta Natación
Gallery (6 photos)
Description
A highly scenic and environmentally valuable open water swimming route that circles the island located off Playa de la Isla. A wild and immersive swim featuring seabird colonies, rich marine biodiversity, Posidonia seagrass meadows, and remarkable archaeological significance linked to ancient Phoenician shipwrecks.
Total Distance (km): 1.8 km
Water Temperature Range (Spring–Autumn): 16–26°C
Estimated Duration: 27–45 min
Difficulty: HIGH
Route Type: Circular / Round-island route
Start–Finish Points: Playa de la Isla
Recommended Season: Spring–Autumn
Sports Beach: No
Detailed Description
The Around the Island Open Water Swimming Route is one of the most distinctive swimming itineraries along the Mazarrón coastline. The route circles the island located opposite Playa de la Isla, creating an immersive swimming experience with spectacular scenery and a genuine sense of open water, despite its proximity to the urban area.
From the very first metres, swimmers gradually leave the shoreline behind and enter a more exposed environment, where the island becomes the main navigation reference. Swimming around its perimeter offers constantly changing perspectives, alternating sections close to the coast with others that feel much wilder, particularly along the island’s far side.
The island and its surrounding waters are protected as a Special Protection Area for Birds (SPA/ZEPA), highlighting their ecological importance. During the swim, participants may observe colonies of seabirds, especially cormorants, which use the island as a resting and feeding area. On occasion, these birds can even be seen diving and fishing underwater, creating a unique experience for swimmers.
The environmental value of the route is enhanced by the presence of Posidonia seagrass meadows and the rich marine biodiversity associated with the island’s seabed. Clear waters, varied underwater topography and the feeling of swimming around a protected natural area make this one of Mazarrón’s most rewarding open water experiences for experienced swimmers.
Beyond its natural significance, the island also has exceptional archaeological importance. The surrounding waters have yielded Phoenician, Iberian, Roman and Medieval remains, including some of the oldest known Phoenician shipwrecks in the western Mediterranean. This underwater heritage adds a fascinating historical dimension to the route, connecting today’s swimmers with ancient maritime routes.
The route combines urban proximity, open sea conditions, biodiversity and archaeological heritage in a single experience. Nearby, the Grimpola Sailing Club offers kayak rentals, which can be useful for logistics and safety support during the crossing.
Each year, the Mazarrón Lighthouse Swim Crossing takes place here, further reinforcing the island’s reputation as one of the municipality’s premier open water swimming locations.
Points of Interest (POIs)
- Protected island (SPA/ZEPA area)
- Circumnavigation of the island
- Colonies of cormorants and other seabirds
- High marine biodiversity
- Posidonia seagrass meadows
- Archaeological heritage: Phoenician, Iberian, Roman and Medieval remains
- Some of the oldest known Phoenician shipwrecks in the western Mediterranean
- Grimpola Sailing Club – kayak rental
- Mazarrón Lighthouse Swim Crossing
- Playa de la Isla
- Playa de la Ermita
Accessibility
Accessible by road and public transport. Parking is available near both Playa de la Isla and Playa de la Ermita. Restaurants, showers and other tourist services are available nearby.
Entry and exit from the water are generally comfortable under normal sea conditions, although the route requires prior planning due to its open water nature.
Recommendations / Safety
Navigation follows the perimeter of the island, which serves as the main visual reference throughout the route. While the course is intuitive, continuous attention is required, especially along the island’s far side, where exposure to open sea conditions and greater depths increases.
This is an exposed open water route and requires previous experience in open water swimming, strong navigation skills and sufficient autonomy to cope with changing sea conditions.
The best conditions are usually found on days with calm seas, good visibility and little or no strong wind. Early morning departures are recommended.
On days with swell, strong winds or poor visibility, the far side of the island may become significantly more challenging.
The use of a highly visible safety tow float is mandatory. Swimming with companions and, ideally, with kayak support is strongly recommended, particularly for groups and organised activities.
Basic Safety Rules – Open Water Swimming Routes of the Region of Murcia
- This route does not have a dedicated lifeguard service: you swim at your own risk.
- Be aware of boats and watercraft, especially when swimming outside buoyed areas.
- Check sea conditions, weather forecasts, water temperature and currents before starting.
- Choose a route appropriate to your swimming ability and always swim with a companion.
- Stay hydrated, apply sunscreen and use appropriate equipment (goggles, brightly coloured swim cap, safety tow float and wetsuit if necessary).
- Respect the sea and marine wildlife; do not disturb or collect any organisms.
- Minors must always swim accompanied by an adult.
- In case of emergency, call 112.