120th ave and colorado in Thornton to Orchard and I-25 in Greenwood Village.
An average commute looks something like this (I vary it due to issues like flooding and boredom)

http://www.bikely.com/maps/bike-path...-commute-ver-1

Due to the length I now take Tue off for recovery and Thursday is a recovery ride. I use the Light Rail to cut the distance in half on that day.

Where abouts do you commute to and from?