These beautiful and challenging whitewater rapids are in the Sai Yai River at Nadi District, Prachinburi Province. They are inside the Khao Yai National Park. Sai Yai later merges with the Bang Pakong River and its waters end up in the Gulf of Siam.
The rafting trip takes almost two hours to run through the rapids of four and half kilometers plus around 40 minutes to walk from the parking lot to where the rafting starts.
The best time for this adventure is the rainy season between July and October. During this time, the water level is high, providing a faster flow and cleaner rapids. After the rainy season, Kaeng Hin Phoeng becomes a large rock terrace.
A rafting trip starts with the Kaeng Hin Phoeng section, which is the most difficult one. After that, Wang Nam Lom (a slow and wide section), Wang Khon, and Wang Look Sua, where it is possible to take a breather. Some rafters chose to leave their rafts here and enjoy a swim at Wang Yao where the current flowed slowly.
The last section (Wang Sai) has fast rapids and then one arrives at the destination, Kaeng Ngu Hao.Rafting is at most a one-day trip, but another day can easily be spent in the Thap Lan National Park nearby.
