As requested - some feedback.
From what you've written I'm not sure that you know what audax is. The link to the coast to coast ride takes you to a commercial site that has nothing to do with audax.
Maybe don't make assertions like 'The human body has an incredible capacity for physical endurance. Its hard, but ignore the brain when it tells you to stop, your body can go another 40%', without some evidence to back it up.
Similarly, your 'This is what you will need to ride audax' list is not that useful. I'm not an experienced randonneur but I've managed to ride events without any of those items (except having some money on me).
Keep up the good work.
