March 7: Kathmandu.
March 8: 7h bus from Kathmandu (1400m) to Syabru Besi (1460m). Hike 8km/2h to Bamboo (1970m).
March 9: Hike to New Langtang (3430m). Lunch. Hike to Kyanjin Gompa (3830m).
March 10: Hike to Menchhyamsa Ri (Kyanjin Peak, 4650m) & Kyanjin Ri (Kyanjin Ri Lower Peak, 4300m). Go down to Kyanjin Gompa (3830m). Lunch. Hike down to Riverside (2769m). Snack. Hike down to Domen (1670m).
March 11: Hike down to Syabru Besi. 10h bus back to Kathmandu.
March 12: Kathmandu.
Solo, no guide, no porters.
Doable in 4 days 🙂
Created the wikivoyage page for this trek. Read it here: https://en.wikivoyage.org/wiki/Langtang_Valley_Trek