By the shortest, most direct route, my commute is 40km (25 mi) round trip; all of it on city or inter-urban streets and freeway frontage roads.

There are no bike paths around here that would be useful for my commute, and I prefer it that way. By far most of the streets I use have a more than adequate shoulder, and on the faster streets I get a noticeable "tow" from the wake as each vehicle goes by...