We recommend staying away from the regular places on this trail as they are quieter and offer a friendlier service.
The drive from Kathmandu offers good views of Manaslu, Ganesh Himal, and Langtang and brief glimpses of village life in the Himalaya. The first section is sealed road to Trisuli before a precipitous dirt road (which is slowly being upgraded) to the National Park and police checkposts on the edge of the bustling trading town of Dhunche (2030m). It is possible to begin your trek from Dhunche, but it means following the road to Thulo Syabru. If you want to stay here, there are many teahouses. The road to Syabru Besi (1503m, approx. 1 hour) has been considerably improved over recent years, which means most trekkers prefer the quieter and more comfortable teahouses here than in Dunche.
From the end of Syabru Besi, cross the footbridge and follow a couple of switchbacks to the extended community on the east bank of the Bhote Khosi Nadi. The trail heads straight through the village, where there are some small teahops and basic teahouses, and then has a few minor ups and downs as you walk upstream beside the Langtang Khola on the true right bank. After 40 mins reach a pretty teahouse called Tingri and soon after cross a suspension bridge to the true left bank and follow the road. The road continues to the new hydro-project construction site, where the trail then climbs 150m into forest (30 minutes).
In another 30 minutes, you will drop to the riverside and there may be a bamboo and log bridge to some hot springs on the far bank. The springs are not always accessible as landslides affect the area regularly. Just beyond the springs is another short climb to some small teahouses at Domen (1820m)

The trail from Domen continues through forest with some pleasant flat sections of riverside glades and minor up (mostly) and downs (sometimes) as you approach Bamboo (1970m, 1.5 hours).
From behind the topmost of three teahouses with flower gardens the trail begins to climb more steadily. Head up into forest to avoid some landslides, although you will return to the riverside a few times before finally crossing a suspension bridge (2150m, 50 minutes) to the true right bank where there is a very expensive teashop. Cross a couple of small landslides and then begin a switchback climb to Rimche (2399m, 1 hour), where there is a collection of pleasant teahouses, a small campsite and views down valley.

The collection of teahouses at Lama Hotel (2487m, 20 minutes) is not far up the trail, where if you want to stay, we recommend that you check and confirm all fees before committing to a teahouse; some even charge you just for sitting in the dining room. From Lama Hotel you enter some beautiful oak, birch, hemlock and mountain-bamboo forests. Spanish moss hangs from trees giving the whole place a mysterious feeling. Try to make an early start from Rimche to give yourself the best chance of spotting monkey and the many birds that feed near the river. At first the trail undulates through the forest before coming to a lone teahouse at Riverside (2670m, 1 hour) in the forest and soon thereafter another lone teahouse at Thomna (Chhunama, 2890m, 20 minutes). From here the trail climbs steadily for more than 200m to Ghoratabela (3030m, 2 hours 10 minutes), where there are two teahouses and a checkpost. If you have the time, consider visiting the small monastery, which the local headman will open for a donation.
The valley now broadens and the gradient eases; Thyangsyapu (3120m, 1 hour) marks the end of the dense forest and the beginning of alpine country.

The small settlement of Chyamki (3110m, 15 minutes) soon appears, before you then reach the gompa at Kangtangsa (3220m) in a further 45 minutes. If you are feeling the effects of altitude it might be a good idea to rest here for the night.
A short climb passing some teahouses, brings you up to views of the classic glaciated U-shaped valley and the start of the Langtang community (3330m, 30 minutes), which is the administrative centre for the valley. You will need to cross the stable landslide that was caused by the 2015 earthquake to reach the newer teahouses on the far side (40 minutes), where there is also a checkpost.
From Langtang it is an easy climb through two Bhotia hamlets, Mundu and Sindum (3410m, 45 minutes). Ahead are views of Ganchenpo (Fluted Peak) and Langshisa Ri, and Langtang Lirung rising above you to the north. The trail then climbs the terminal moraine of the Lirung Glacier and descends to the gompa and many teahouses of Kyangjin Gompa (3830m, 1.5 hours). If you arrive early enough, sample the nearby cheese factory, visit the gompa, and consider trekking up the trails that run on either side of the Lirung Glacier to see ice falls and spot musk deer or blue sheep.

The easiest viewpoint to reach is a hill to the north of Kyangjin Gompa where many prayer flags, which can be seen from the village, indicate the summit (4360m, 2 hours). For the more adventurous there are many good views on the climb of Tsergo Ri (4984m, 3½ hours climb). There is an excellent look-out with magnificent views of Langtang Lirung and its surrounding peaks – it can be reached by climbing the slopes immediately behind Kyangjin Gompa. Further to the east of Tsergo Ri, is Yala Peak (5500m, 6 hour climb), which is more spectacular, and if icy, may require a trekking peak permit, mountaineering skills and equipment.
Alternatively, a trek further up the valley towards Langshisa Kharka (4160m, 7 hour return trek) provides great views of the ranges bordering Tibet and a chance for some more wildlife spotting in the early morning.

Retrace your steps on the main trail. You might want to stay in different places on your descent or return to see friends. Either way a clearly marked trail follows the river to Syabrubesi (1503m) where there are many teahouses and a regular bus service to Kathmandu (10 hours).