So, I know John as a colleague. First things first, he is a very talented, but a very commited and very well organised person. The emphasis is on committed. If he says he is going to do something I do not doubt that will finish it, come hell or high water.
If I stand next to him, it is very plainly obvious that I do not have the same level of commitment. John is willing to put in every bit of effort into everything that he does. I, on the other hand….
This is why the TD is still just an idea in my head, because I know the level of commitment you have to give to it.
Be sure that you are ready to give just about everything to this race, because it may just consume you. That or the bears.
Good luck.