Chiang Mai to Siem Reap: Road Trip Guide & Distance

How far is Chiang Mai from Siem Reap?

The distance from Chiang Mai to Siem Reap is 494.2 miles (795.4 km) as the crow flies. Siem Reap is located SE of Chiang Mai. By car, the driving distance is approximately 593.1 miles, taking about 11h 56min. A direct flight would take roughly 1h 30min. Chiang Mai is in Thailand, while Siem Reap is in Cambodia.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements.

Coordinates come from public place data for Chiang Mai and Siem Reap. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.