7.2mi each way if I go directly to work. I often ride different/longer routes, usually racking up at least 25-30 miles a day including a quick spin at lunch. Once or twice a week I do 20-30mi on the way to work just to get along workout in, and on those days I can do as much as 50-60mi total.
I have a little one at home and I don't get time for long rides on the weekend, so I have to fit my rides in around my commutes. I shoot for 100mi a week and have been averaging about 125-150 a week for most of the summer.