Mae Sariang to Chiang Dao: Essential Road Trip Guide

The drive from Mae Sariang to Chiang Dao covers roughly 230 kilometers on Highway 108 and 107, passing through the scenic Mae Hong Son and Chiang Mai provinces. The route is famous for its sharp curves and mountain passes, particularly as it climbs toward Doi Inthanon, Thailand's highest peak. This guide will help you decide how to best use your time, whether it's a straight-through drive or a leisurely exploration.

Starting in Mae Sariang, a quiet riverside town, you'll head north on Highway 108, then join Highway 107 near Chom Thong and continue to Chiang Dao. The total driving time is approximately 4–5 hours without stops, but to do it justice, plan for a full day.

Fuel stops are plentiful along Highway 108 and 107, with small stations roughly every 30–40 kilometers, but they can be sparse between Mae Sariang and Mae Chaem. It's wise to fill up in Mae Sariang or at the PTT station just south of Chom Thong. The total fuel cost for a typical car is around 600–800 baht, based on current petrol prices.

Tolls: This route has no tolls, but there are several weigh stations for trucks. Keep an eye out for them at kilometer markers 45 and 122. For a faster and more scenic alternative, consider the new section of Highway 108 after Mae Chaem, which cuts through the mountain and offers better pavement.

• Fuel price: ~30 THB/liter (gasoline)
• No tolls
• Distance between fuel stops: ~30–40 km

Road quality is good throughout, with new asphalt in most sections, but expect uneven surfaces at construction zones. The most dangerous stretch is the mountain pass between Mae Chaem and Chom Thong, with tight turns and steep inclines. Drive with low-beam headlights during the day to be visible.

Family-friendly: The route is suitable for children, especially with stops at places like the Royal Agricultural Station in Khun Wang, which has gardens and a small zoo. For pets, most guesthouses and cafes in the area are pet-friendly, but it's best to ask ahead. Restrooms are available at fuel stations and some scenic viewpoints.

To manage fatigue, plan stops every 1.5–2 hours. Good rest areas include Mae Chaem market and the Kerng 120 viewpoint, which offers a panoramic view of the valley. Hidden off-route spots: a short detour to the Huai Lom Parrotbill pool, a turquoise natural swimming hole near the Km 84 marker. Always carry water and snacks, as some sections have few services.

The landscape transitions from dense teak forests to limestone peaks as you approach Chiang Dao. In the rainy season (June–October), the mountains are shrouded in mist, and the waterfalls are at their most spectacular, but the roads can be slippery. During the dry season (November–February), the air is clear and cool, making for excellent photography. Temperatures in the mountains can drop to single digits at night.

Culinary stops: In Mae Chaem, try the famous Khao Soi (curry noodle soup) at a local shop. Near Chom Thong, fresh strawberries and processed berry products are sold at many roadside stands. The how to find the best stops and hidden gems between cities guide offers more tips for enriching your journey.

The Karen hill tribe villages around Mae La Noi offer handwoven textiles and coffee. While no UNESCO World Heritage Sites lie directly on the route, the nearby Doi Inthanon National Park is a contender for the Thai tentative list, containing the dual pagoda chedis built for the king and queen. The park's summit is a major draw, and you can visit the royal summit chedis for a small fee.