I'm a former racer who took a couple of years off. I'm interested in doing some racing again this summer. The problem is that with work and family committments most (if not all) of my riding during the week is limited to trainer time in front of the television. On the weekend I can get 2-3 hours outside each day, though. Is it possible to be competitive with most of you miles indoors? Is there anything I should concentrate on? Thanks.