Amphoe Pai is a small district in the northeast of Mae Hong Son. Pai is very famous for Thai and foreign visitors as it the center to go for rafting and camping around the area as there are many important rivers flowing through the district. Pai is getting hip and famous among visitors as a cute little town where you can find things from local charms of daily life to adrenaline rush sports such as rafting.
Pai River Pai River is the biggest and longest river in Maehongsorn province. The origin of the river occurs from TanonThongchai and Dan Laos mountain range. The river flows pass the valley in the north to the south pass 3 Amphurs of Maehongsorn province; AmphurPai, Amphur Pang Mapum and AmphurMuang and combined together with Salawin River in Myanmar. Pai River is 180 kilometers long and 30 meters wide and 7 meters at the deepest. The floor of the river consists of pebbles. The water is cool all year with swiftly flowing in the rainy season
The popular activity for the tourists is rafting. The difficulty ranges from 2-3 during October-February and ranges from 3 -5 during June-September. Apart from the beautiful scenery, there are also other locations worth visiting such as waterfall, hot mineral spring, cave, cliff etc. There is also a gentle rafting activity and long-tailed boat to visit the Karens tribe at Baan Nam Piang Din which is in the border of Thailand-Myanmar.
Tha Pai Hot Spring is another attraction in the area of Huai Nam Dang National Park. The hot spring is two kilometres off Route 1095 at Km. 87. It has an average temperature of 80 celcius. Steam from the spring permeates the site in the morning creating fascinating sights. The area is also rich in teakwoods and suitable for overnight camping.