Here are 10 national parks in Thailand that offer hiking trails:

- Khao Yai National Park: Located in the northern region of Thailand, Khao Yai National Park is home to a diverse range of flora and fauna, including elephants, tigers, and bears. The park has a network of trails that range from easy to challenging, and some trails offer stunning views of the surrounding landscape.
- Doi Inthanon National Park: Located in the northern region of Thailand, Doi Inthanon National Park is home to Thailand’s highest mountain and offers a variety of hiking trails through beautiful forests and past waterfalls.
- Doi Suthep-Pui National Park: Located in the northern region of Thailand, Doi Suthep-Pui National Park is home to the famous Wat Phra That Doi Suthep temple, as well as a variety of hiking trails that offer views of the surrounding mountains and forests.
- Erawan National Park: Located in the western region of Thailand, Erawan National Park is home to a number of waterfalls and hiking trails that pass through lush forests and offer views of the surrounding landscape.
- Khao Sok National Park: Located in the southern region of Thailand, Khao Sok National Park is home to a variety of wildlife and offers a number of hiking trails through the park’s rainforests.
- Khao Sam Roi Yot National Park: Located in the southern region of Thailand, Khao Sam Roi Yot National Park is home to a number of marshes, lagoons, and mangrove forests, and offers a variety of hiking trails that pass through these unique ecosystems.
- Khao Luang National Park: Located in the southern region of Thailand, Khao Luang National Park is home to a number of caves and offers a variety of hiking trails through the park’s forests and past its waterfalls.
- Khao Khitchakut National Park: Located in the eastern region of Thailand, Khao Khitchakut National Park is home to a number of waterfalls and offers a variety of hiking trails through the park’s forests.
- Khao Nam Khang National Park: Located in the eastern region of Thailand, Khao Nam Khang National Park is home to a number of waterfalls and offers a variety of hiking trails through the park’s forests and past its waterfalls.
- Khao Laem National Park: Located in the western region of Thailand, Khao Laem National Park is home to a number of waterfalls and offers a variety of hiking trails through the park’s forests and past its waterfalls.