Race Dates Are Posted in the Events Calendar

See links below for specific races

Pecatonica River Water Trail Canoe/Kayak Race
http://www.uscanoe.com/Event.cfm?Event_ID=565
 
I&M Canal and DuPage River Race
http://www.uscanoe.com/Event.cfm?Event_ID=899
 
10th Annual DuQuoin Lake Race Southern Sampler
http://www.uscanoe.com/Event.cfm?Event_ID=456
The Chicago Flatwater Classic
http://flatwaterclassic2010.eventbrite.com/

U.S. Canoe Association (USCA) also maintains a full listing of races and other events at the link below (IPC and non IPC races are listed):