The Everest or SoluKhumbu region is the second most popular trekking area in Nepal. It would probably be the most popular destination, but it is more difficult to get to Solukhumbu than to the Annapurna area. To get near Everest, you must either walk for a week or fly to Lukla, a remote mountain tremendous amount of up and down walking. A glance at the map will show the reason why. All the rivers in this part of Nepal flow south from Himalayan glaciers, but the trek route proceeds east. Therefore the trail must climb to the ridge that separates two rivers, descend to the river itself, and ascend the next ridge. Even though the trek begins at an elevation of 1860m, on the sixth day it crosses the Dudh Koshi at only 1500m after considerable uphill( and downhill) walking. If you total all the uphill climbing, it will come to almost come to 9000m of elevation gain from Jiri to Everest base camp.Everest area trekking can be done with in 07 days to a month.