I am planning on participating in a charity event next year in February that entails doing pull ups for 24 hours. I am challenging a friend who did the event alone this year. I am starting to instill the Primal lifestyle and I was curious how I could train for an endurance even like this primally.

The guy I am challenging did 2501 pull ups in 24 hours (he actually had to stop after about 14 hours) so I am going to have to gain a lot of strength but also train for endurance (I am thinking of outlining the training in a manner similar to someone training for a marathon).

Any ideas on how to approach my training and what kind of diet I should be incorporating during my training. Most of my energy should be coming from fat with some carbs mixed in for glycogen replenishment correct?

Thanks in advance