Khao Yai National Park Trails (Day Trip)

Khao Yai National Park lies roughly three hours northeast of Bangkok in Nakhon Ratchasima and Nakhon Nayok provinces, and is typically visited as a day trip or overnight excursion rather than a walk within the city itself. Access is by public bus from Bangkok's Mo Chit terminal to Pak Chong (150–200 THB, about 2.5 hours), followed by a songthaew to the park's visitor centre at the main gate; a foreigner park entrance fee of 400 THB applies, but no separate hiking permit is needed for the marked day trails. The park offers a network of trails ranging from the easy 3-kilometre Kong Kaew Nature Trail near the visitor centre to the more demanding 8-kilometre Haew Narok trail leading to one of the park's largest waterfalls, with most routes falling in the 5 to 15 kilometre range and taking three to six hours depending on the combination chosen. Terrain underfoot is a mix of packed dirt and root-covered forest floor, often muddy and slippery after rain, with occasional stream crossings and short, moderately steep sections rather than sustained technical climbing; the park's highest point, Khao Laem peak at 1,351 metres, is not part of the standard day-hiking routes. Shade is near-continuous under the dense evergreen and dipterocarp forest canopy. Landmarks along the trails include Haew Suwat and Haew Narok waterfalls, and salt licks and open grasslands where elephants, gaur, and hornbills are frequently spotted, particularly around dawn and dusk. There are no formal refuge huts on the day trails, and water sources are limited to the waterfalls themselves, which are not treated for drinking; visitors carry all the water they need. Rangers can be hired at the visitor centre as guides for longer or less-marked routes, and this is recommended for trails venturing beyond the main waterfall loops given the presence of wildlife and the risk of getting lost in dense forest.