If you go to http://hamvention.aprs.fi/?zoom=city you can see all the live APRS activity happening around Dayton as folks folk in for the 2009 Hamvention there. For many, you can see their routes and if you click on them, get even more detailed info.

APRS.fi is a fantastic site and my favorite place to go to see APRS activity. You can zoom in/out, move around and switch between satellite or map view. The features on the site are immense, but just watching what is going around Dayton during the days leading up to the hamvention as well as when it is in full swing is fun.

73,
K2DSL