Good luck with the the row, thats a very fast pace your aiming for.
It is a very dificult distance event and pace from the outset is critical. Could possibly shave a second or two off my pace but that would be it. The last hour was very hard work so increasing the pace only slightly would result in over 2 hours of very hard work !
Would join you to try a HM at that pace but 4am is not a good start time for us !
Carl Watts Age:45 Weight:100kg Height:183cm
PB's age 40-45