See the video of the exiting Cat 3s and milling at the start of a local SoCal good amateur race. The Cat 3s are finishing and leaving, those staging and starting are 30ish Cat 1s, same number of Cat 2s and small handful of pros. I only know 30% of these riders and about 10% know me.

Can get = wheel profile, wheel width, aero bars, aero frames, aero helmets and even position.
Observation: I saw higher profile wheels in the Cat 3s than in the P12 race.

The following items have more aero selections available, generally at a higher weight, but at costs similar to what these riders chose to use. This was in a 28.4mph average speed race where AERO would certainly matter.

I saw no TT helmets.
I saw a very few what appeared to be over 70mm profile wheels.
I did not see any rear discs.
There were no tri-spokes
Tires were a mix of 23 and 25mm, I saw no 19mms
Estimate 80% had round handle bars.
The majority of bikes were round tubes.
There were few skin suits, and one speed suit (my kid)
There were no booties.


https://vimeo.com/129448200