Laguna Phuket Open Water Swim

The Laguna Phuket Open Water Swim brings swimmers together for an open water challenge. Swimmers gather directly on the golden sand in front of the SAii Laguna Phuket resort, stepping off the beachfront into the warm waters. Now celebrating its 3rd edition, the event takes place on a Saturday in mid-November, when the Andaman coastal weather turns remarkably placid and invites long-distance swimming. The venue offers a rare combination of open marine shoreline and tranquil inland water, as the resort lies nestled right beside an expansive tropical lake lagoon. For participants standing along the tide line, the morning light glints across broad sandy shores where the race begins. Swimmers can take on several distinct courses tailored to different levels of endurance, choosing between individual distances of 1,500 meters, 3,000 meters, and a flagship 6,000-meter crossing, alongside a 4,500-meter category reserved for teams.

Out on the course, participants test their stroke and open-water navigation against natural coastal currents and gentle ocean swells. Safety is tightly structured across every distance, and every athlete is required to tow a personal swim buoy behind them as they make their way between the offshore turn marks. Swimmers under 18 years of age can take part as long as they are registered by a parent or guardian, while individual age group categories span across 18 to 29, 30 to 39, 40 to 49, 50 to 59, and 60 and over for both men and women. Competition remains sharp right to the finish arch, as only the first-place finisher in each age division takes home a trophy.

The 2025 edition and the Laguna Phuket lagoons

The Laguna Phuket Open Water Swim presented by TriHub was held on Saturday 22 November 2025, the day before the 31st Laguna Phuket Triathlon on Sunday 23 November. TriHub's managing director said the 2025 Laguna Phuket Open Water Swim drew many first-timers who chose it as their debut in open water competition. The Laguna Phuket Triathlon, held the day after the open water swim, includes a 1.8 km swim in both the Andaman Sea and the freshwater lagoons of Laguna Phuket.

The Andaman Sea shift from monsoon swell to November calm

The eastern coast is defined by muddy shorelines, while the western coastline features sandy beaches. This western aspect makes the beaches around Bangtao ideal grounds for open-water sports, giving swimmers clear access to open expanses. While Kamala Beach experiences wind and rolling waves from May through October, the waters settle into their calmest state between November and April. Bangtao Beach features soft sand with only gentle waves rolling into the shore. Farther south at Kamala Beach, these calm winter months bring waters so clear that snorkeling becomes possible around the sheltered northern end of the bay between November and April.

The western coast has also weathered profound moments in contemporary history, showcasing an extraordinary resilience. On December 26, 2004, a massive tsunami triggered by an earthquake in the Indian Ocean struck the western shores of Phuket, causing severe destruction across prominent coastal stretches including Kamala, Patong, Karon, and Kata. Kamala Beach suffered heavy damage when the waves surged ashore, and today visitors can visit a dedicated tsunami memorial placed there to honor the victims of the 2004 disaster. Further south along the island's western flank, Patong Beach extends for more than four kilometers in length, drawing travelers along its wide coastal sweep. Like its neighboring bays, Patong was struck hard by the 2004 tsunami, but rapid reconstruction transformed the shoreline, and the beach is now equipped with an advanced tsunami warning system to protect residents and sea swimmers alike.

In December 2006, deep-sea detection buoys were deployed approximately 1,000 kilometers offshore between Thailand and Sri Lanka. Karon Beach is the second longest stretch of sand in Phuket province. The 2004 tsunami inflicted serious structural damage here as well, particularly across its southern reaches, yet by 2008 the shoreline showed minimal remaining signs of the event as the natural coastal sands and community rebuilt completely. Swimming along these shores today reveals a coastline that has fully healed, guarded by modern monitoring networks while preserving its peaceful marine rhythm.

Trade galleons, pirate waters and the coastal redoubts of Thalang

For generations, Phuket Island served as an indispensable anchorage along vital global shipping lanes, welcoming trading ships and merchant fleets sailing all the way from Portugal, France, the Netherlands, and England. That bustling maritime commerce ran into turbulent times during the mid-sixteenth century, when the island's prominence as an international trading port suffered a sharp decline. Dangerous bands of pirates took advantage of the island, while unpredictable sea conditions repeatedly caught sailing vessels off guard. On March 13, 1785, a grueling month-long coastal siege by Burmese military forces came to an end after local women organized and successfully defended Thalang City, driving the invaders away from the island. That enduring connection to the sea remains visible along the western bays, including nearby Kamala Beach where a traditional Muslim fishing village remains.

Sirinat National Park and the granite headlands of northern Phuket

The park encompasses an environment that is 76 percent open water and 24 percent land, anchored by rugged granite mountains such as Khao Sai Khu and Khao Mueang that rise behind the sand. The coastal geology of the national park is shaped by continuous marine action, featuring steep rocky cliffs, wide stone platforms, and sweeping sand dunes. Several of its secluded coves and sandy stretches were formed over centuries through the erosion of headland cliffs driven by breaking waves and longshore currents. Within this protected intertidal habitat, the clean ocean sands support thriving colonies of mole crabs, commonly known as sand crabs.

Lagoon ferries and beachfront dining along Bangtao Bay

Back at the race headquarters, the SAii Laguna Phuket estate offers a setting where coastal nature blends seamlessly into open-air living. The beachfront itself is lined with a welcoming array of local restaurants and open-air bars that let guests dine and relax with their feet directly in the warm sand. Beyond the resort grounds, the surrounding neighborhood is known for its luxury residential villas and private homes, creating a lively evening environment filled with dining spots and relaxed beach clubs. After completing their swim in the ocean, athletes can unwind inside the resort's sprawling swimming pool complex, which features a 55-meter water slide that curves through tropical gardens. Organized by Laguna Phuket, Laguna Phuket Open Water Swim combines the test of ocean distance with the serenity of the shoreline, offering an unforgettable weekend on the water.