Hey michiganxcrunner - I haven't run the current course, but we (runmichigan.com) have been at the race a number of times. It's pretty much a flat road race. It starts and finishes in the Corktown area of Detroit (near where the old tiger stadium was). It goes up and back on Michigan avenue and some extra in the middle. Here is a link to some photos from the 2011 race:
http://www.runmichigan.com/view.php?id=12331.