I went on a 12 mile excursion down the dupage river. I started at Weigand Park In Naperville, and took out at Electric Park in Plainfield. Took about 3.5 hours, with me paddling at an average speed.
Current was strong, weather, decent. the water leve was pretty low. In my kayak, I didn't scrape up too much, but it was still a factor at times.
It's still hard to believe that I accumlated 100 miles beyond my original goal of 300. With determination, you can not only reach, but exceed your goals.