Will,
Not to cop out on answering your question, but let's at least start with
this. It is the Great Neighborhood Restaurant Guide from LTHForum, Chicago's most authoritative discussion site for the local foodies. The GNR awards are given out annually, as voted on by the membership. The awards are given out in recognition of great restaurants serving their neighborhoods in relative anonymity, as opposed to the Charlie Trotter and Rick Bayless types who are getting international accolades for overpriced fou-fou food.
The link I've provided you will allow you to print out a handy pocket guide that you can carry with you. One or two word descriptions of the type of food served, along with addresses and phone numbers for each restaurant are included. If you want further guidance, go to the main page of the site and try the Eating Out In Chicago forum for plenty more ideas.
rouxdog does make an excellent suggestion for Greek food. Chicago's extensive Greek Town neighborhood is pretty much due west of where the marathon ends up in Grant Park. Greek Islands is a big, bustling, theatrical kind of place with good food and more than its share of tourists. Our family's personal favorite is Pegasus. It's slightly more subdued than Greek Islands, with excellent food and service. You can dine on the roof top as rouxdog suggests, but because it is a very popular destination (you'll get a beautiful view of Chicago's skyline) you will pay higher prices for the same meal you could get downstairs in the regular, very comfortable dining room. Best of all at both places is that they offer free valet parking in this hard to park neighborhood.
Also, you're not too far from China Town and the LTHForum's namesake, Little Three Happiness Restaurant, information for which is in the GNR guide linked above.
Take a look through the guide and if nothing there, or any of the other places I've mentioned grabs you, I'll make some more suggestions.
Good luck in the race,
Buddy
Greek Islands Restaurant 200 S. Halsted
Chicago, IL 60661
(312) 782-9855
www.greekislands.net
Pegasus 130 S Halsted St
Chicago, IL 60661
(312) 226-4666
www.pegasuschicago.com
Three Happiness
209 W Cermak Rd
Chicago, IL 60616-1913
(312) 842-1964
<message edited by BuddyRoadhouse on Fri, 09/11/09 2:35 AM>