Matty-

Head south on the Platte to just south of Hampden. The Platte will cross the river to the eastern shore and the Bear Creek will continue straight. (simplistic I know) The BCT runs all the way out to Morrison and is a little disconnected in a couple of places on the west end, but once you know how to connect the dots, its not bad.

My commute is 15 miles too. Mostly on bike trails. The single speed rocks, except when the wind is in my face. Then, it just hurts.