Momm77,
This is a great end-of-the-summer century! (We planned on doing it every year, but I stayed in bed last year!) This is a report from two years ago. If you've done some hills, you'll be fine. The first 10 and last 10 are hilly, but the rest is pancake flat. Riding part of the route helped calm my nerves. From Alton, headed up Great River Road to Pere Marquette park and back. From, Alton down to Chain of Rocks bridge and back on the levee. Parked in St. Charles New Town and rode the Golden Eagle Ferry over to "Hill County!"

http://forums.teamestrogen.com/showt...ht=ride+rivers

http://forums.teamestrogen.com/showt...ht=ride+rivers

http://trail.motionbased.com/trail/activity/6962374

It took me a lot longer than I'd hoped, but I definitely wasn't the last one out there and give me room for improvement!