Doi Wiang Pha National Park

Doi Wiang Pha National Park covers roughly 583 square kilometres straddling Chai Prakan and Fang districts in Chiang Mai, reaching north into Mae Suai district in Chiang Rai. Its highest point, Doi Wiang Pha peak, tops out at 1,834 metres with a 360-degree viewpoint over the surrounding ridgelines. Entry costs 100 THB for foreign visitors and 20 THB for Thai nationals — genuine national park pricing, not the token fee some smaller sites charge.

Three named waterfalls give the park an easy structure for a day visit. Huai Sai Khao Waterfall, a three-tier drop just 300 metres from the park office, is the one most visitors see first — barely a walk, with clear water year-round. Doi Wiang Pha Waterfall sits about 8km further into the park, an 18-metre fall reached by a longer trail, and Mae Fang Luang Waterfall (10 metres) has an easier path suitable for most fitness levels. The peak trail itself is the harder option, climbing through forest to the 1,834-metre summit and its open ridge views — a genuine hike rather than a short walk, best done early to beat the afternoon heat.

Watch out: the final approach road from Fang town winds through steep mountain sections that are slow going on a motorbike, especially after rain. Allow extra time and check conditions locally before setting off, particularly in the tail end of the rainy season.

Insider Tip: Morning mist regularly pools in the valleys below the peak during the cool season — arriving at first light for the summit trail is the difference between a hazy afternoon view and a genuine sea-of-mist sunrise.

The park entrance is reached from Fang town rather than Chiang Mai city, roughly an hour’s drive north through Chai Prakan. Basic camping is available near the park office for anyone wanting an early start on the summit trail. Bring sturdy shoes, water and sun protection — facilities inside the park are minimal, and this is a genuinely quiet corner of the north compared with Doi Inthanon or Doi Suthep-Pui.