No shame in combining public transit with biking. I do it too. My commute is long-65 miles. Twice a year I ride all the way home. Summer Soltice so I have max daylight to make it, and around winter solstice, when we get off early for the holiday. When I started, the five mile from the train station to work took all I had. You'll get there. (I did thirty today to a train station halfway home.)