Nurburgring 24
One of the world's three "major" 24 hour races, Nurburgring has a special place within the hearts of "real" racing fans and drivers. The 7 mile track doesn’t do much to spread out the 200+ car field, so an action packed 24 Hour event is pretty much guaranteed. The event unconventionally accepts entries of low powered production cars and not so experienced drivers alike, which makes for a tougher exercise on the top racing drivers competing as the abundant traffic in the already vastly difficult and dangerous Nordschleife (north loop) adds as a huge difficulty factor.