If you haven't had a chance to check out cyclocross, Saturday is a good way to get an introduction to the sport by Randy Warren, one of the top coaches in the area.
Road riding through a cross country course mixed with the Steeplechase, covered in mud with your HR pegged. Cyclocross is an amazing workout and a great way to challenge yourself in this changing weather.
Where: The Illinois Institute of Technology Campus (33 & State)
When: Saturday Morning- Click Here for Directions and time
Here's a cool point of view video about Cyclocross.