Time to dust off that bike. There are many great books on where and when to hit the trails on your bike. Check out these for trails in Illinois or through out the US. Touring on Your Bicycle  The city of Chicago also is very bike-friendly. They have paths and maps available to download or request. Chicago Bicycling

 

However, you do it, bicycling is good exercise, great for the environment, and a lot of fun. Enjoy!