Ob Khan National Park - Chiang Mai

Notes from our team

Atmosphere

The park sits in Hang Dong district, about 40-60 minutes from central Chiang Mai. Its defining feature is a limestone canyon with steep walls enclosing a fast-flowing river. The 800-metre nature study trail follows the water over natural sandstone rocks, with interpretive signs explaining points of interest along the way.

Getting there

The route from central Chiang Mai starts on a well-paved main road before turning onto a narrow, winding, rough stretch where some sections run along unfenced cliff edges. Drive or ride slowly and sound the horn at corners. The trip takes about 40 minutes from town, making it an easy half-day destination.

Water & swimming

The river runs fast in parts, but there are calm stretches suitable for a swim down in the canyon. Always check with the rangers before getting in, as the current can be strong in places. Life jackets are available for rent at around 50 baht.

Best time to go

Early morning is the quietest and most comfortable time before day-trippers arrive around midday, when it also gets hot. Afternoons work well too. Check the park's Facebook page before visiting, as some trails, including the riverside walk, are temporarily closed at times.