I'm 41, out of shape, and my commute is 13 miles each way. It is slightly hilly and I do about 13 MPH (depending on the wind direction and speed) and I leave 2 hours early. So it takes me about an hour each way, and I leave an hour for a shower (female/long hair) and change, and time to get across campus to my class. It leaves me plenty of time to spare, and I like that.

The hills that seemed so huge at first now seem a lot smaller.