Here is a link to another thread that talks about the MARCO Marathon Calculator.
It might help you with your pacing in the event.
Thanks. It looks cool.
Well, I went for it and I did it! I followed MARCO's pacing pretty closely and had a heck of a negative split... last half was 9:53 seconds faster than the first half. Overall time 6:29:55, beating my goal of 6:30:00.
WTG on the negative split. I might have to try MARCO the next time.