The short commute route is 22.2 miles, and the longer, more scenic route is 25 miles each way. Most of this ride is on a MUP along a river with lots of wildlife to see. Elevation difference is about 400 ft total and no real hills to speak of. On a good day, it's 1 hour 20 minutes. Add in a little wind, or after a tiring day at work, and it can take up to 1 hour 40 minutes.
I ride a CAAD9 and carry a backpack with a few tools, a spare tire, tubes, and my work clothes.
I'm very very fortunate to have a bike locker right outside my office and my building has a full locker room with showers in the basement.
Typically I commute three times a week. However last month with the great Fall weather commuted every day.