Located some 30 kilometers directly north of the Kathmandu valley, close to the boundary with Tibet, extending in an east-west direction and bordered on the north by the main peak of the Himalaya, is dominated by Langtang Lirung (7245 meters), the highest in the area. These areas between the Himalayan foothills and the Tibetan frontier, are several regions popular with trekkers. These include Langtang valley, Gosainkunda, Tamang Heritage, Helambu and the high country above Gatlang.
Day 1: Kathmandu to Dhunche, Day 2: Dhunche to Syabru, Day 3: Syabru to Sing Gompa, Day 4: Sing Gompa to Gosainkund, Day 5: Gosainkund to Ghopte, Day 6: Day to Tharepati and Tarke Ghayang, Day 7: Tarke Ghayang to Kiul, Day 8: Kiul to Pati Bhanjyang, Day 9: Pati Bhanjyang to Sundarijal and Kathmandu
(From Lonely Planet)
Day 1: Sundarijal to Chisopani, Day 2: Chisopanit o Golpu Bhanjyang, Day 3: Golpu Bhanjyang to Tharepati, Day 4: Tharepati to Melamchi Ghyang, Day 5: Melamchi Ghyang to Tarke Ghyang, Day 6: Tarke Ghyang to Kiul – Kul to Kathmandu