Mae Hong Son Loop: The Complete Guide to Thailand's Mountain Road

The Mae Hong Son loop is one of Southeast Asia’s great road trips - a 600-kilometre circuit through the mountains of northern Thailand that connects Chiang Mai to the remote border province of Mae Hong Son and back via a different route. The road passes through hill tribe villages, limestone cave systems, bamboo forest, terraced rice paddies and three distinctive towns that each deserve more than a single night. It is challenging, occasionally remote and spectacular throughout.

The Route

The loop runs in either direction from Chiang Mai. Most riders and drivers choose the counterclockwise direction - north through Pai and Mae Hong Son before returning via Mae Sariang - because this puts the steepest mountain section (Chiang Mai to Pai) in the morning of the first day when energy is highest.

Full clockwise route: Chiang Mai → Pai → Mae Hong Son → Mae Sariang → Chiang Mai

Total distance: approximately 600 kilometres
Elevation change: constant - the road rarely levels out, with peaks reaching 1,800 metres in places

The main road throughout is Route 108 (Mae Sariang direction) and Route 1095 (Pai direction). Both are sealed and maintained, though landslides in monsoon season can temporarily close sections.

Chiang Mai to Pai (150km via Route 1095)

The first leg is the most technically demanding: 150 kilometres of continuous mountain road through Doi Suthep-Pui and Chiang Dao national park territory. Route 1095 is counted to have 1,864 curves between Chiang Mai and Pai - a statistic that local tour companies use both as a warning and as a selling point.

Leaving Chiang Mai via the northwest, the road climbs immediately into mountains. Mae Malai (kilometre 36) has the last fuel station with reliable petrol before the altitude climbs. Fill up here.

Pua Klong Waterfall (kilometre 68) and the turnoff for Pha Dok Siew Nature Trail are popular stops in the Doi Suthep-Pui foothills. The waterfall trail takes about 45 minutes return.

Allow 4 to 5 hours of riding time for this first section, plus stops. Riding the full 150km non-stop is possible but exhausting - the curves demand constant attention and the mountain light fades fast.

Pai

Pai deserves at minimum one full day and one night. Thirty years ago it was a sleepy market town; it is now a well-developed base for hiking, hot springs and the surrounding rice fields. The centre remains compact - all the main guesthouses, restaurants and shops are walkable.

Pai Canyon (Kong Lan) - narrow sandstone ridges with sheer drops and 360-degree views of the valley. The sunset here from the ridge is among the best in northern Thailand. Free entry; walking time 30 to 60 minutes.

Sai Ngam Hot Springs - natural hot spring pools 8 kilometres from town on the road toward Mae Hong Son. Entry approximately THB 200 per person; open 07:00 to 18:00. The thermal pools are a genuine soak rather than a tourist facility.

Pai Walking Street - the Saturday and Sunday night market along Charoensuk Road has the usual craft market format but a good selection of hill tribe textiles and local food. Expect to pay THB 40 to THB 80 for a bowl of noodles from street stalls.

Where to stay in Pai: Guesthouses proliferate but book in advance for December to February. Reverie Siam is the town’s premier boutique hotel, with colonial-style architecture and a pool - rooms from approximately THB 3,500 to THB 5,500 per night. Budget travellers cluster around Bamboo Pai Guesthouse and similar in the THB 350 to THB 700 range for a fan room with shared bathroom.

Pai to Mae Hong Son (110km via Route 1095)

The road from Pai to Mae Hong Son continues north before swinging west into more remote territory. Traffic thins noticeably after Pai - you can ride for 20 minutes without passing another vehicle.

Coffin Cave (Tham Lod) is the major attraction on this stretch, located 9 kilometres off the main road near Soppong. A cave system extending 1,600 metres through a limestone mountain, navigable by bamboo raft through an underground river. Entry approximately THB 180 (guide fee additional, required). Open 08:00 to 17:00 daily. The cave contains enormous prehistoric wooden coffins of unknown origin, hung on ledges above the river. Allow 2 to 3 hours for the full cave tour.

Soppong (Pang Mapha) is a small town 45 minutes before Mae Hong Son with several good guesthouses and cave-tour operators. It makes a sensible overnight stop if you want to break the loop across an extra day.

Mae Hong Son

The capital of Mae Hong Son province sits in a valley surrounded by mountains on the Myanmar border. On winter mornings the valley fills with mist that gives the town a distinctly ethereal quality - this atmosphere has made it a long-running draw for photographers.

Wat Jong Klang and Wat Jong Kham - twin temples on the edge of Jong Kham Lake are the town’s iconic image: white and gold pagodas reflecting in still water at sunrise. Both are active temples; entry is free. Dress code applies.

Wat Phra That Doi Kong Mu - a hilltop temple at the south edge of town with two chedis containing relics of revered monks. The 200-step climb gives the best views over the valley and toward Myanmar. Entry free; open 06:00 to 18:00.

Mae Hong Son Morning Market - operates from approximately 06:00 to 09:00 daily on Phadungpisit Road, with a mix of hill tribe sellers from Shan, Karen, Padaung and Lisu communities selling vegetables, forest produce and cooked food. The market atmosphere is authentic rather than touristic.

Where to stay in Mae Hong Son: Imperial Tara Hotel offers the most comfortable mid-range option in town, with lake views from the upper floors - approximately THB 1,800 to THB 2,800 per night. Budget guesthouses near the lake run THB 400 to THB 800 for a fan double.

Mae Hong Son to Mae Sariang (164km via Route 108)

Heading south from Mae Hong Son on Route 108, the character of the loop changes. This southern section has fewer tourist facilities than the northern route but passes through the widest valleys and most open mountain scenery of the entire circuit.

Ban Rak Thai - a tea-producing village of Chinese Yunnanese origin, 45 kilometres north of Mae Hong Son (a worthwhile detour before heading south). Houses in a distinctive southern Chinese style line the shore of a reservoir; the oolong tea here is locally grown and priced far below Bangkok rates. THB 100 to THB 200 for 100 grams of good loose-leaf.

Namtok Mae Surin National Park - the tallest waterfall in Thailand (approximately 100 metres) is accessible via a 7-kilometre unsealed side road off Route 108. Best visited October to January when water flow is at its maximum. Park entry approximately THB 200.

Mae Sariang - a quiet river town on the Salween that deserves more visitors than it gets. Two excellent temples, Wat Chong Sung and Wat Si Bunruang, are within walking distance of each other near the riverside market. The town has a small selection of good guesthouses (THB 400 to THB 900 for a fan double) and is 4 hours from Chiang Mai, making it a natural final night on the loop.

Mae Sariang to Chiang Mai (190km via Route 108)

The final leg follows Route 108 north through Hot district and into the Chiang Mai valley. The road is wider and straighter than the earlier mountain sections - more functional than scenic. Hot district has several roadside lunch stops serving kao moo daeng (red pork on rice) that are worth a break.

Allow 3 to 4 hours of riding time with no diversions. Arriving back in Chiang Mai by late afternoon means time to return the motorbike and recover before dark.

Motorbike Rental

Most riders rent in Chiang Mai. Tony’s Big Bikes (Charoen Prathet Road) rents Honda CB500 and larger bikes from approximately THB 800 to THB 1,500 per day depending on engine size. A 125cc Honda Wave is adequate for the paved loop but uncomfortable on longer days - 250cc or above is more practical.

Smaller rental shops around the Nimman Road and Tha Phae Gate area offer 125cc automatics from approximately THB 200 to THB 300 per day, but mechanical reliability varies. A credit card deposit or passport hold is usually required.

Required for rental: International Driving Permit (IDP) with a motorcycle endorsement. Thai law requires this for foreign riders; police checkpoints on the mountain sections do occur.

Minivan Option

The loop by public and private minivan:

• Chiang Mai → Pai: approximately THB 150 per person by shared minivan (4 hours), departures from Arcade bus station
• Pai → Mae Hong Son: approximately THB 150 per person by shared minivan (4 to 5 hours), daily departures
• Mae Hong Son → Mae Sariang: approximately THB 100 per person by shared songthaew/van
• Mae Sariang → Chiang Mai: approximately THB 150 per person (3 to 4 hours)

Private minivan charter from Chiang Mai (covering the full loop with driver): approximately THB 3,500 to THB 6,000 per vehicle per day. Suitable for groups of 4 to 6 who want flexibility without riding.

Best Season

November to February is peak season and peak riding season. Temperatures are cool (daytime 18°C to 24°C in the valleys, lower on mountain passes), roads are dry, and visibility is excellent. Book accommodation in Pai well in advance.

March to May is hot and dusty. Temperatures in Mae Hong Son valley reach 38°C in April. The mountain roads are clear but riding in midday heat is tiring. Smoke from agricultural burning in March significantly reduces air quality in northern Thailand during this period.

June to October (monsoon) brings emerald green scenery and waterfalls at full power, but mountain roads can be slippery and rockfalls are a real risk after heavy rain. Experienced riders who check road conditions daily can have spectacular low-season trips; beginners should avoid this period.