The Langtang Valley Trek can be done in as little as a week, but day hikes in the upper valley are sure to detain you for another two or three days. It takes about a day to get interesting, first following the continuation of the Dhunche road (a spectacularly destructive feat of engineering, built to reach a lead and zinc mine in the Ganesh Himal) up the unpromising valley of the Trisuli River before leaving the road and rounding a bend to Syabru in the Langtang Valley. The next two days are spent climbing briskly up the gorge like lower valley, where oaks and rhododendron give way to peaceful hemlock and larch forest; after ascending an old moraine, snowy peaks suddenly loom ahead and the gorge opens into a U-shaped glacial valley. Springtime is excellent for flowers here, and in autumn the berberis bushes turn a deep rust color.
Two Bhotiya villages occupy the upper valley: Langtang (3.300m), the bigger of the two, makes a good place to spend a night and acclimatize, while Kyangjin (3.750m) boasts a small gompa, a cheese "factory" (fabulous yogurt) and an attractive chalet-lodge. The Langtang Glacier is a full day's walk further up the valley. You'll want to spend at least a couple of nights in the upper valley to explore the glaciers and ascend the 5.033 metre Yala Peak (Tsergo Ri), from which you can view an awesome white wilderness of peaks, including 8.013-metre Shisha Pangma.
Day 01 Kathmandu 1.400m Dunche 1.950m minibus or 4 wheel drive
Day 02 Dunche 1.950m Syabru 2.130m
Day 03 Syabru 2.130m Lama hotel 2.500m
Day 04 Lama hotel 2.500m Ghora Tabela 3.010m
Day 05 Ghora Tabela 3.010m Kyangjin 3.798m
Day 06 Kyangjin 3.798m climbing Thergo Ri (5.000m)
Day 07 Kyangjin 3.798m Lama hotel 2.500m
Day 08 Lama hotel 2.500m VSyabru - 2.130m
Day 09 Syabru 2.130m Dunche 1.950m
Day 10 Dunche 1.950m Kathmandu 1.400m minibus or 4 wheel drive
US$ 1300 Per person, minimum number of participants : 2 * .
Equipment hire costs :
US$ $1.5 Per item per day, Down jacket - waterproof jacket - kit bag etc.