But if those 2000 miles weren't hard pressed and you didn't maintain a high heart rate that body fat isn't going anywhere. You need to constantly push to pedal harder and faster.
Otherwise you may be in a situation where math will help. Count your calories for 2 weeks. Figure out what you eat exactly and drop that by 2500calories a week (approx 1 pound). You should start to see a difference. If you don't loose anything you a) either aren't going hard enough to up you heart rate or b) you didn't drop your calories enough and are still eating too much or c) you are eating crappy foods which doesn't help at all.