About 600 cyclists are competing in the 38th Tucson Bicycle Classic, a four-day racing event that runs through Sunday across the Tucson metro area.
It kicked off Thursday with a time trial in Marana, featuring a 4.5-mile course on a portion of the Chuck Huckelberry Loop.
“Each person is racing against the clock, said Race Director, Marco Colbert. “It’s probably, in a way, the hardest form of bike racing.”…