Mt everest climbing Route How Long Does It Take To Climb Everest Mountain (8848.86m)? Well, climbing a high mountain is a long and gradual process, and it may vary on weather conditions and physical strength. And Mt. Everest is not an exception. In general, it takes around Eight to Ten days to reach Everest Base Camp after spending few days in Kathmandu. And at the Everest Base Camp, you’ll spend around six weeks on Training, Proper Acclimatization,.Rotation to the higher camps & Final Summit Pu