There are boys and Girls classes, but girls can usually ask permission to race in the boys classes, should the wish to do so.
The balance bikes have their own class, and usually only race the last 2 straights of the BMX track (this varies from track to track), which is usually the first race of the day.
Classes are separated by age and Beginners Novice or Expert. If you are new to racing, you’ll start off in the Novice class. So you’ll be happy to know that when you start off racing BMX, you will be racing against other beginner riders. There are also Cruiser classes for the 24 inch bikes, as well as
Pro/Elite classes for the Professional riders.
Flat Pedals vs Clip Shoes/pedals:
Once you’re at the track you’ll notice that some riders race with flat pedals and flat soles shoes/sneakers, and others are racing with shoes that are clipped into the pedal. As a beginner/ novice racer, you may only use the flat pedals. Don’t get caught
up in the hype about Flat pedals vs clip shoes. Stay on flat pedals for as long as you can, it helps build your BMX skills.
The UCI international ruling is “No clip shoes for riders 12 and under” even for the Expert classes.