Mike has just hit the 1000mile mark in 5 and a bit days which isnt bad considering he has crossed the southern alps and had a 50 mile day due to the ferry crossing at the start.
The first week will be the most punishing on people, the second probably painful but thereafter they should settle into a routine and be able to really crank the miles out.
106 days is the target that i know mike has, 80 days is a 225mile/day average and while im sure all would love to achieve it in reality anything close to 100 will suit most.
Mike has an article in this months issue of Privateer which is something relating to pain so will be worth a read. From knowing Mike for years too, he has never been silly fit, he just doesnt feel pain. Is Sadist the word?