Originally Posted by
sam_cyclist
The vast, vast majority of people buying bikes at $6K+ are not racing. ...
Who cares? The OP asked about the difference between these bikes, not the demographics of who buys them.
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Cat 2 Track, Cat 3 Road.
"If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --
the tiniest sprinter