80 women racers in just one club? WOW
That's really impressive! There aren't many more licensed women in the whole state of PA! But the SE PA region also compromises the MD and NJ riders, so we have a few more. But still, 30 is a good field, and I've been in races as small as 3...and they were opens. Crits are easier to get two races in, usually a 1/2/3 and a 4 or 3/4. What few road races we have for women are usually an open, but we can usually get 4's broken out. We are working on it, but it's an uphill battle! And this is an area ripe of racing!
My team does close it's roster in October. I'm not sure if other teams in this area do that. But even so, we're all tight. If an unattached girl shows up and is friendly, she'll be welcomed! It could work to your advantage, you'll have the chance to meet women that you gel with and that will be the team you join. That's the one good thing about womens racing vs. men. There's no proving ground. If you are enthusiastic, and want to race your bike, you'll be welcomed to the ranks!
"The bicycle is just as good company as most husbands and, when it gets old and shabby, a woman can dispose of it and get a new one without shocking the entire community." -- Ann Strong, Minneapolis Tribune, 1895