decent target, and i need a substantial amount of money for the international red cross, so they can provide clean drinking water and fresh, sanitary conditions, to communities worldwide. you re one of the so-called ultra marathoners, i think you have run between new york and california a couple times before. but are you concerned that you might be pushing your limits a little bit here? well, i don t think anybody really knows what their limits are until they get there. and i ve always said that. you know, i ve been asked by journalists many, many times, when will you know when you ve had enough? and i said when i drop. and i can t get back up again. well, we hope that doesn t happen. well, so do i. but that s about good preparation, knowing your body very, very well. you know, i ve been training for years for doing this. this is the accumulation, this is the sum of 20 years worth of distance running. and how old are you now? i m 48. 48? well, you certainly have to be cle