My strong thanks to the cHarlotte H4.  Without them, this would have been a whole lot tougher.
Connie and I had similar experiences for our marathons.  Except Charlotte was brutally cold.
     To start, wrong packet pick-up location was given.  So, I drove all over Charlotte needing a toilet desperately after skipping a toilet stop to push in the last several miles, tired from 8 hours of driving and 4 hours of work plus being up since 3:45 a.m., totally hate city driving, directions to the original packet pick up were very inefficient and a brain tired to the point that normally indecipherable driving directions once location of packet pick up were correctly given were a lost cause.  This was the start of the weekend and a foreshadowing - great people and a totally inept bureacracy.
     Anyway, found packet pick-up eventally.  And then found the house where dinner was to be by luck and hash sense (?).  Dinner and hashers were great. Then off for 5 hours sleep.  Rain.
     Breakfast - 1-1/2 Harvest Bars and Gatorade.  Rain. Made race start in the hash shuttle van.  Rain. Then found toilets in parking lot near van, but no one had much of an idea where the start was and no signs were posted directing us there. Rain.
     Found the starting line while walking with a couple other guys, but naturally no toilets for late thoughts.  See the pattern.  Rain. The normal self-congratulatory nonsense, a brief prayer along the lines of "Dear God, We pray no one dies today and we hope they go to heaven if they do".  Rain..  "Slow start" for me and then time to settle in to pace.  Flirted and the norm for the fisrt several miles.
     Rolled through the early hills easily, not warming up for a while.  Needed to pee and other things.  Rain.  About mile 7, guys were pulling along a wooded area and raining on the trees.  Cold Rain.  About mile 8, guts were really trying to fertilize the shrubs.  Started looking seriously for a private spot to take care nesessities.  Fortunately, at this point, while looking left at a great wooded area, I heard a port-a-pot door slam.  Cold Rain.  Backed up a few strides and took care of the problem.  Colder rain.
     By mile 10, rain began to get really cold.  Really cold rain and wind.  The rest is a blur unitl mile 20.  Basically a series of great bodies to stare at for a couple minutes, rolling hills and more rain, harder at times and definately colder as time went on.  Took almost more effort to open the Power Gels than they were worth.  Really cold rain.
     Mile 20 I hit at @ 2:44:46.  I had a solid shot at a PR if I could get my 10K time in less than 50 minutes.  Mile 20 was down hill.  Calves were beginning to seriously tighten, but able to deal with it.  Miles 21 to 26 were rolling hills.  Not much of an issue if it had been early, but began to be a real problem by mile 22.  Cold Rain.  Naturally, the last several miles also had a stretch that went through the heart of the city - breathing nasty nasty diesel fumes and other wonderful intoxicants.
     Mile 22 was where I began to hurt bad in the lower legs and I started dying.  Stride was chopped to a short dog trot.  The mile markers seemed to be consistenly gettting spaced further apart.  Cold Rain and more Cold Rain.
    Mile 24 was up and broke me entirely.  Pretty residential area, but rolled.  Cold Rain.  Stride was less than a dog trot.  Pain was unbelievable in the calves.
    Mile 26 finally came around a turn.  Mentioned to a group of females all I wanted was a hot tub with 6 females (them preferably) in it.  A male who was in similar physical condition to me raced me in the last 100 yards.  Then it was time to get rid of the chip and become foiled.
    At this point, "To The Moon", found my remains and helped me limp to the hash van.  Again, great people but inept bureacracy - easy to get into the van, but hard to get the van out of the parking lot.
    Stayed over Saturday night, hashing, partying and sleeping.  Snow was not something I wanted to drive into on the way home.
    Finally, got out in good time Sunday, met an ice patch in before leaving Charlotte, and then met a bit of concrete.  A van pulled over and helped me call 911.  Again, great guy, but the people at 911 were clueless.  Same once I found a cop.  He was great, but the system supporting him was useless.  Fortunately, I was able to drive home.  Car is in need of serious body repair.  I'm uninjured.
 
   Summary -
     In rain, do not wear tights, go bare legged!!!  A lot of people in tights were cramping hard in the calves, especially because the water stayed in the tights - on the legs and chilled the skin even more.
     Vaseline1 - none on course that I remember.  However, because of the weather, I did not need any more than I had on at the start.
     Vaseline 2 - use it without reservation, thick and everywhere.  Apparently a lot of guys had bleeding nipples.
     Vaseline 3 - rubbed it thick on the thighs to keep the water rolling off.  It must have worked.
     Food - happy I took Power Gels with me to keep from trying something new and untested on my body.  Still not sure what to eat before tehe event.  I may go to the large muffins I normally eat at home and just deal with the inconvience of takign them along instead of going efficient and using Harvest Bars, ... .
     Clothing - keep the torso warm.  I really like the Race Ready (?) shorts with 5 pockets in them.  Great place to store gels, ...Otherwise, I wore a wind proof vest, Cool Max long sleeved t-shirt, tennis visor and synthetic socks.  Was about the right combination, considering the amount the weather conditions varied - damp, rain, hard rain, cold hard rain, windy cold hard rain and ... .  Not easy to decide what to wear.  Sometimes I wanted more, other times I wanted less.  This depending a lot on the wet stuff - hard rain I wanted something heavier, other times I was too warm.
     Training - definately the 3 hour or 20 mile training run is wrong.  I was strong until I reached the end of the where I trained.  Then I died.  Tough hills at the end of a training run are a good idea to help with the last few miles.
     Other things I carried - Pepto Bismol tablets for the stomach, really worked.  Menthol cough drops - helped with the lungs.  Vasleine - a plastic bag full is a good idea.
     Power Gels - impossible to rip off the tops in a way that allowed them to open fully.  I will probably be nicking them lower down, so they open easier.  
    The people in tights were the ones hurting the most.  The tights kept the cold water next to the skin and chilled the muscles even more.  The calves of a lot of people looked really cramped.
 
   I would do this again.  It was a nice point to point.  However, they may be changing the course back to a prior version.  3:41:14, 147/446 men, 165/581 overall.  At least 100 no shows or drop outs.  Relays were great company.  Weather was a huge factor in this event.
                                                                                               Take Care,
                                                                                               Tom Gardner