Sirinat National Park is in Thalang District, about 30 kilometres (19 mi) north of Phuket town on the coastal section surrounding Phuket International Airport.
The park’s total area is 90 square kilometres (35 sq mi), with 68 square kilometres (26 sq mi) of marine area and 22 square kilometres (8.5 sq mi) land-based. The park includes four main beaches: Hat Nai Thon, Hat Nai Yang, Hat Mai Khao, and Hat Sai Kaeo. Hat Mai Khao is Phuket’s longest beach.
Sirinat National Park is best known for its well-preserved white sand beaches. Also, Hat Mai Khao and Hat Nai Yang are both sea turtle nesting areas. Between November and February sea turtles come to lay eggs on these beaches.