Calculating Potential Energy Change for a Mountain Climber

[Generally Confused]

Homework Statement

A 95-kg mountain climber hikes up a mountain to an elevation of 5000 m. What is the change in the climber's potential energy?

Homework Equations

I might be missing something but here's everything that might be relevant:
w=fx
p=w/t
p=f*v
KE=1/2mv^2
PEg=mgh
PEe=1/2kx^2
Wnet=E

The Attempt at a Solution

I plugged the numbers into the gravitational potential energy equation and got 4,655,000J. Is this correct? If not, what am I missing?

 

[kuruman]

It is correct. Incidentally, this shows how large (or small) a Joule is.

 

[haruspex]

An interesting perspective is to convert this to about 10⁶ calories. At a resting dietary requirement of 2000 kilocalories per day, the walker would need to eat 50% extra.