Sindhudurg Ocean Swimathon

The Arabian Sea laps against the ramparts of Sindhudurg Fort. Right along this coast, the Sindhudurg Ocean Swimathon is an open water swimming race held in the Arabian Sea at Chivla Beach, Malvan, in the Sindhudurg district of Maharashtra, India. The event has been gathering swimmers on the sands of Chivla Beach since 2009, making it a longstanding ocean fixture on India's western seaboard. Organized by the Sindhudurg District Aquatic Association, the competition offers a broad ladder of distances ranging from 500 metres to 1, 2, 3, 5, and 10 kilometres. Adaptive categories accommodate Divyang swimmers across the program, creating an exceptionally inclusive starting line on the sand. The marathon 10-kilometre test is aimed at swimmers with proven endurance, such as a previous official 5-kilometre swim.

The race brings together an unusual multi-generational community, welcoming competitors from four to ninety-five years old and frequently seeing three generations of the same family plunging into the surf together. In past editions, the event introduced automated timing using wristbands and touch pads, giving competitors accurate splits the moment they sprint out of the water. Full medical facilities support the field throughout the morning, ensuring safety as swimmers navigate the ocean swell. Every swimmer who reaches the finishing gate receives an official participation certificate on the beach.

The December weekend at Chivla Beach: days, groups and prizes

The 2025 Sindhudurg Ocean Swimathon at Chivla Beach was held on Saturday 13 and Sunday 14 December. The 2025 edition was the 15th Sindhudurg Ocean Swimathon and the 3rd Maharashtra Ocean Swimathon. The organisers announced the 15th edition of the Sindhudurg Ocean Swimathon with over 3000 swimmers competing across various distances and race formats. At the Sindhudurg Ocean Swimathon the distance depends on the age group: children aged 8 to 10 swim 1 km, those aged 11 to 12 swim 2 km and those aged 13 to 15 swim 3 km. On the Saturday of the 2025 edition the program at Chivla Beach covered the 10 km swim and the 2 km and 1 km finswimming races. On the Sunday of the 2025 edition the 5 km race started first, followed by the 3 km, 2 km, 1 km and 500 m swims. The winners of the Sindhudurg Ocean Swimathon receive cash prizes with medals and gifts, and participation certificates are given to all those who complete the race. Every swimmer at the Sindhudurg Ocean Swimathon receives a program QR code that includes the route map. Chivla Beach offers activities such as snorkeling, diving and swimming, and visitors can take a boat ride to observe the fish. Sindhudurg Fort and Padmagad Fort are among the attractions in the vicinity of Chivla Beach.

Sindhudurg Fort: the island stronghold anchored in molten lead

Sindhudurg Fort is an imposing maritime stronghold built in the Arabian Sea off the Konkan coast. The sea fort was erected between 1664 and 1667 across the low-lying rocks of Khurte Island. Constructing massive battlements directly in the open sea required extraordinary engineering, including the use of over 40,000 pounds of molten lead poured into the foundations to anchor the masonry. A continuous curtain wall stretches for two miles around the island perimeter, rising thirty feet into the air and measuring twelve feet in thickness. These colossal stone ramparts were engineered specifically to resist the relentless pounding of Arabian Sea breakers and surging coastal tides.

Kalaval Creek: the rival bastions of Bharatgad and Bhagwantgad

About thirteen kilometres from the race beach, the region's historic defense network extends inland along the banks of the Gad River, also known as Kalaval Creek. Shivaji Maharaj had scouted the prominence of Masure Hill in 1670 but decided against building there due to the complete lack of fresh water on the summit. Construction was eventually initiated by Wadikar Phonda Sawant in 1680 and finished in 1701, though when Captain Hutchinson captured the stronghold in 1818, he discovered that its deep well had run completely dry. Directly across the waterway, about fourteen kilometres from the swim venue, Bhagwantgad crowns the northern bank. The fort was constructed by Pant Pratinidhi and the Bavdekar shortly after the Sawants finished Bharatgad, built for the express purpose of monitoring enemy troop movements across the water.

In 1748, Tulaji Angre launched assaults against both strongholds, failing to capture Bhagwantgad even after an grueling eighteen-month siege. The military rivalry along the river finally ended in March 1818, when British East India Company troops crossed the tidal creek to storm the northern bastion. Today, traditional small boats still carry passengers across the waters between the villages of Kawawadi and Kawamasure.

Karli Estuary and the historic reservoir of Dhamapur

Tarkarli sits where the tranquil flow of the Karli River empties into the Arabian Sea. Widely celebrated as the Queen Beach of the Konkan region, it characterizes this section of the coast.

Along the crescent of Chivla Beach and traditional Malvani shores

Back at Chivla Beach, swimmers assemble on a gentle, 1.2-kilometre crescent of soft sand. The strand is formed of fine golden quartz mixed with dark magnetite sand, the result of natural weathering and marine deposition along the bay. Slender coconut palms fringe the high-tide line, while out in the water, the seabed profile creates distinct sandbank peaks that produce clean, rolling waves well-suited for beginner and intermediate surfers. A working fishing village stands anchored at one end of the cove, maintaining a rhythm of sea life that has changed very little over time. Early morning swimmers warming up on the shore can watch local crews head out and draw shore-seine nets through the breakers, followed by brisk fish auctions right on the water line.

The bay maintains an unhurried, peaceful atmosphere throughout the day, drawing runners and walkers to its firm, wet margins. After long hours swimming in the salt water, the beachfront shacks nestled beneath the palms offer the ideal recovery meal. Traditional Malvani cooking is centered on fresh regional fish, prawns, and crabs. On full moon nights, walkers stroll along the tranquil curve of Chivla Beach to watch the moon emerge from the dark horizon of the sea.