Absolutely you can do it!!!

I hope to race one day as well, having started riding now at a little over 30, like you.

Plus another thing is that cycling has categories for all ages, masters, seniors, etc. In addition, all the literature I've seen of vo2max & muscle decline is very, very slow. So at say, 50 you may be a hair slower than at 35, but that would be a thin one indeed - assuming you train and stay fit.

Look at Jeannie Longo - she set the Mt. Evans hill climb record for women in 98, as a perky 40 year old and finished 10th in the olympic RR in 2004 as a whippersnapper of then just, 46.

Like I said, you can do it