The best hikes and national parks in Thailand

Ranked for a first or second trip, mixing easy day walks with two- and three-day routes. Each pick lists why it earns a slot, the best window, and what it costs in time and money. Nights are the minimum that does the place justice.

We ranked parks and routes on four things: how good the walking is, how easy the park is to reach without a car, whether there is somewhere to sleep inside or beside the park, and how reliable the dry-season window is.

We favoured places where a traveller can arrive by public transport or a short transfer and walk the same day, and we left out parks that need a private 4x4 or a multi-day permit. Where a park is famous mainly for scenery you view from a boat, we said so rather than calling it a hike.

Costs are given as bands, not exact figures, because park entry, guide fees and transfers are set locally and change. Treat every number here as a 2026 estimate and check at the gate.

November to February is the reliable window across the country: dry trails, cooler mornings and clear views from the northern peaks. December and January are the busiest, so book park accommodation and raft houses early.

February to April the north and northeast heat up and burn, with smoke reducing visibility and air quality in Chiang Mai and the surrounding hills. This is the time to move to the Andaman coast (Nov–Apr) or the Gulf islands (Feb–Sep) instead.

May to October is the southwest monsoon: trails are muddy, leeches appear in the rainforest, and some island parks and boat services close. Khao Sok and Khao Yai stay open and are green and quiet, but plan around afternoon rain and check park closures.

Most trips start with a flight into Bangkok, then a domestic hop. Chiang Mai is the gateway for Doi Inthanon, Doi Suthep–Pui and the northern parks; Surat Thani and Phuket are the gateways for Khao Sok and the southern island parks.

From Bangkok, Kanchanaburi and Khao Yai are road trips of roughly 2.5–3 hours, doable as an overnight rather than a day trip. Hua Hin is the base for Khao Sam Roi Yot, about an hour away. Island parks such as Tarutao and Surin run seasonal boats from Pak Bara and Ranong.

Public buses and minivans reach park gates on the main routes; the last stretch to a trailhead is usually a songthaew, a park shuttle or a hired car. Every overnight bus costs you a day, so fly where the distance is long.

Approximate positions, for orientation only. Use them to group parks into one leg of a trip rather than to navigate.

Allow two nights per park if you want more than a photo stop, and three to four nights for Khao Sok with the lake, or for a northern loop that pairs Doi Inthanon with Chiang Mai. Day hikes from Chiang Mai and Kanchanaburi need no extra nights beyond your city base.

A workable shape: three nights in Bangkok, then four to five nights in the north for the mountain parks, or four to five on the coast for Khao Sok and the island parks. Trying to add both the north and the south in ten days is where trips fall apart.