If driving and parking the morning of the race, plug in the SEPTA station address 3600 S Broad St, Philadelphia, PA 19145 then when you get close you should see a lot of cars looking to get into the lot and people directing traffic. I usually aim for Lot T.
It takes 37 minutes on the SEPTA from the NRG station at Citizen's Bank Stadium to the Olney Transit Center, plus additional time walking to the start/waiting for a train/ect. so make sure you leave plenty of time to get to the start in addition to driving in. If you'll want to use a port-a-potty before the race, those lines will be LONG if the school track field isn't open again this year, so make sure to add in another 20/30 minutes for that to not feel stressed.
I personally really enjoy the race (it's my 9th year doing it), but I like the energy of big races. Logistics to me aren't bad, but it all depends on what you're used to. I spend a lot of time driving in NYC and North Jersey, so to me traffic exiting doesn't even register. I'm in my car, with the heater blasting, and it only adds 10 minutes to my journey.