Regina,
Your commute can really help you reach the 2500 miles you signed up for. My standard commute is only 4.3 miles each way. I do it 3-4 times a week, with a few longer distances thrown in during the long days of summer. I track my miles on bike journal and the commute miles are also tracked on my clubs website. I ended up with 2300 commute miles - almost half of my total miles for the year! Those little distances add up!
"Bicycling is a big part of the future. It has to be. There's something wrong with a society that drives a car to workout in a gym." -- Bill Nye