Amgen Tour of California riders wrapped up Stage 4 of their race yesterday afternoon. The riders began at Laguna Seca Raceway yesterday morning and ended on Harbor Street in Morro Bay. The race picks up this morning at 10 a.m. Pismo Beach. Stage 5 will take then along Highway 1 through Oceano and Guadalupe to Orcutt eventually ending up in Ventura. One of the toughest pro cycling events in the country will end in Pasadena on Saturday.