Congratulations on your vastly improved time. Not that I am any type of expert on this, but I'd say your goal for next year is pretty much in your own hands. In theory, anything is possible, but it comes with a corresponding ramp-up in training. You need to weigh up how much and what type of training you can fit into your day. I know people who only have time for a few spinning sessions a week and a couple of long rides on the weekend. I also know people who are in the fortunate position that they can ride 4-5 hours every day of the week. Not surprisingly, the guys and girls who are able to train more and with consistency are the ones who do well and are usually able to improve their times from year to year. Although, as Veeez points out, its not a linear relationship. Once you get to a certain level of fitness, gains are harder to come by and less significant.
