Tilicho Lake (4.920 m) - Annapurna
Crossing Eastern Pass (5.340 m) - Mesokantu North (5.370 m))

You can go to the Lake from Manang as Lodge Trekking. Your need around 4 days.

The crossing via Eastern Pass and Mesokantu North to Jomsom is possible as Camping Trek.
From Manang to Jomsaom you need around 5 days.