Here is a link to an interactive map for the 2006 Chicago Marathon I made on local.live.com.

You can use it to figure out the best place to watch the race or find out where traffic is going to come to a halt.

I like local.live.com much better than Google Maps. Take a look even if you aren't planning on going to watch.

(There is a pushpin on the map for Ricci Nuts because I wanted to check it out while we were down there, but it turns out they are not open on Sundays.)