I'm indifferent to location. Two fun races are Virginia Beach, Va (party town, cheap hotels on the beach) and New Jersey Shore. But the concensus might be for a central location like Chicago, Oklahoma, or Texas.
You asked what people look like. I'm Dave Warlick. Baltimore pictures for bib 6133 were by marathonfoto.com. Marine Corps pictures for bib H1098 were by asiorders.com. NYC was bib 26080 but it doesn't put pictures on the web. Richmond pictures for bib 147 were by marathonfoto.com (not yet posted, since the race was this morning. A free gym bag! Very nice!)