What you are doing there, is the best damn marathon out there ! You will meet the best and kindest marathoners, and the best part is:
This is the only marathon that gives you feeling you got when you finished your very first marathon !
Don't worry, you'll do fine!
I already know you'll finish in time, because it only took 4.5 hours to walk down. Which means if you walk up the same pace, you beat the 10 hour cut-off by an hour !!!
And to think you thought Sharon Woods get you prepared for this ? You'll have stories for life over this one. Wear you finishers shirt proudly my friend !