Chiang Mai · Thailand
Doi Inthanon Summit Road
1009Chom Thong to Doi Inthanon Summit
Route 1009 is the only paved road to the summit of Doi Inthanon, Thailand’s highest peak at 2,565 m, climbing 48 km through tropical, pine and rare montane cloud forest.
Turn off Highway 108 at Chom Thong and climb steadily past the Mae Klang and Wachirathan waterfalls to the Twin Royal Pagodas near the top, then the summit car park. Well-surfaced throughout; at the top the temperature can be 15C cooler than Chiang Mai, with frost on winter mornings.
Scenery
MountainForest
Best seasons
WinterSpring
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Doi Inthanon Summit Road on the map29.0 mi · point to point
Chom ThongStart · Chiang Mai
Doi Inthanon SummitEnd · Chiang Mai
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Character
Corners56bends
Tightness5of 10
Max gradient13%≈ 1-in-8
Climb2,384 mtotal ascent
Summit2,562 mhighest point of the line · 8,406 ft
Corners
busiest around mile 25Elevation
under 4%4–8%over 8%287 – 2,562 mPoints of interest3 stops
- Sirithan Waterfall viewing platformViewpoint14 mi in
- Larn Sadat Waterfall viewpointViewpoint26 mi in
- Mae Klang WaterfallViewpoint5.6 mi in
Hazards
- Sustained steep gradient on the descent
- Summit frost on December-January nights
- Cloud and fog at the summit in the wet season
- High visitor volume
Sources
“Doi Inthanon is the highest mountain in Thailand, reaching 2,565 metres, and is accessible by a paved road running to the summit.”
Verified route: mapped from real road geometry and fact-checked by a human editor. How roads get checked
Driving the Doi Inthanon Summit Road: quick answers
How long does it take to drive the Doi Inthanon Summit Road?
Doi Inthanon Summit Road runs 29.0 miles (47 km) and takes about 58 min to drive without stops.
How difficult is the Doi Inthanon Summit Road to drive?
We rate it moderate: 56 corners, a maximum gradient of 13%, and a tightness of 5 out of 10.
When is the best time to drive the Doi Inthanon Summit Road?
Winter and Spring are best.
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Doi Inthanon Summit Road
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