Pretty much 3.5 hrs per day minimum. Each leg of the commute is bike-train-bike. I do it every work day (5 days a week). So that is about 18 hrs or so a week. By car, my commute would take me 2 hrs per day, or 10 hrs per week. So I have invested 8 hrs a week to get execise, stress reduction, reading time on the train, and cost savings.