I have two routes into work, one is 10.9 miles, the other 11.5 miles. I always take the shorter route unless I need the other route that takes me past my business address in case I need to pop in. The shorter route also has very slight variations but nothing drastic.

The way I figure it, in the mornings I wanna get to work asap, and in the evenings I wanna get home reasonably asap.