I vary most in the morning. Basically, my route (to start with) follows the Metro train line, so I can make it a 1/2 mile leg up to a 4.5 mile leg. The rest is train/bus and a short 1 mile leg to the office, which again I can make a little longer if time permits and I want to hit the grocery store.

Evenings I usually take a shortish route to save some time and get home to my dogs. Oh, and my significant other