If you mean how many days to reach Base Camp then it is:
Kathmandu to Base Camp (Tibet side) - 10 days
Kathmandu to Base Camp (Nepal side) - 12 days
If you mean how many days to reach the summit of Mount Everest then that is between 4 - 8 weeks
To reach the South (Nepal) side of Mount Everest takes around 14 days from Kathmandu. To reach the North (Tibet) side of Mount Everest takes around 10 days.
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It can take up to 60 days to reach the summit of Mount Everest. It depends on the weather and you also must allow time for your body to adapt to the high altitudes.
On 15 May 2006, after forty days of climbing, Mark Inglis became the first ever double amputee to reach the summit of Mount Everest.
It took Edmund Hillary 7 weeks to climb Mount Everest.
Japanese climber Tamae Watanabe, became the oldest woman to reach the summit of Mount Everest on the 19th May 2012, at the age of 73 years and 180 days.
On 15 May 2006, after forty days of climbing, Inglis became the first ever double amputee to reach the summit of Mount Everest, this was his only time.
Japanese climber Tamae Watanabe, became the oldest woman to reach the summit of Mount Everest on the 19th May 2012, at the age of 73 years and 180 days oldTamae Wantanabe(73) of Japan
The British Mount Everest expedition that Edmund Hillary was a member of reached base camp on the 12th April 1953. Edmund Hillary and Tenzing Norgay reached the summit on the 29th May. Allowing for rest days and acclimatization it took them 47 days.
It takes around 40 days to climb Mount Everest, allowing for the weather and aclimatization.
Japanese climber Tamae Watanabe, became the oldest woman to reach the summit of Mount Everest on the 19th May 2012, at the age of 73 years and 180 days old
The amount of time needed to climb Mount Everest is usually around 60 days.