Langtang Valley Trek It is a spectacular trekking journey to Langtang Valley, combined with mountain scenery, rich cultural heritage, and diverse landscapes. It is close to the Tibetan border, offering a great deal of unbelievable sceneries and cultural experiences. It usually takes 7–10 days to complete this trek, and its starting point, Syabrubesi, is accessible by a 7–8 hour drive from Kathmandu. Langtang valley is weather-sensitive, and it's best during spring and autumn. The best months are from March to May and up to November. These are the months seen to have clear skies usually and provide fantastic views of peaks such as Langtang Lirung, Dorje Lakpa, and Langshisa Ri. The elevations range from 10°C to 20°C throughout the daytime. The elevations reach as low as -5°C overnight at the higher ranges.