Racers warm up at the Rock Hill Velodrome in preparation for Friday night's races.
They're from as far away as Los Angeles and Philadelphia.
Rock Hill and York County have taken the lead in the region on amateur sports, something Charlotte leaders are now trying to emulate.
That's why they approved $25 million to turn Bojangles Coliseum into an amateur sports complex.
It sounds like a lot of money, but Rock Hill said amateur sports brought in $18 million last year.
The Charlotte Regional Visitors Authority says 57 percent of all hotel rooms booked in the Charlotte region are related to amateur sporting events.
On top of the money, it gives Rock Hill bragging rights.
"These are the top riders. They have been to the Olympics, or will be going to Olympics," said Micah Rice, vice president with USA Cycling. "The word is out in cycling, and other sports, Rock Hill is a good place to come."
Charlotte leaders are hoping soon to do a little bragging of their own soon.