The overland jeep tour starts in Pokhara and lasts at least seven days to complete. However, the entirety of getting back to Kathmandu and some light exploring requires at least 12 days.
From Pokhara, you will be driving through Kobang, Kagbeni, and Ghami to reach Lo-Manthang. From Lo-Manthang, you will trace your way back to Kobang and then Pokhara. You need to plan for at least one day to explore Lo Manthang.