The 140th Kentucky Derby begins today at historic Churchill Downs.

The 19 three-year-olds out of the 23,150 registered thoroughbreds born in North America in 2011, are the select few that are fast enough, healthy enough and lucky enough to make it into the starting gate for America's most treasured horse race.

Yuba City's own California Chrome is the morning-line favorite at 5-to-2 and will break from post-position five.  

Post-time for this year's "Run for the Roses" is 6:24 p.m. Eastern time.