The Thailand Swimathon is a high-energy open water swimming event held in Na Chom Thien, Chonburi—an emerging seaside destination known for its calm waters and relaxed coastal charm. From kids' 100 m swims to the challenging 10 km distance, the event welcomes swimmers of all ages and abilities to take part in a professionally organized race. With Swim Buoy safety gear and international standards in place, participants enjoy a secure and scenic swim along Thailand’s eastern shoreline.