I've been road racing since getting out of college and am interested in getting my feet wet in the trail running world. When I search Trail Runner Magazine and Ultra Running Magazine they list hundreds of races, but how do I know what races are worth going to? I live in Kentucky and would like to stay in the eastern US to cut down on traveling expenses for the time being. Anyone know of a good fall trail race ranging from half marathon to 50K in the eastern US where a road guy could get some experience against some good competition?