Riverside will host a walk for suicide prevention and mental health awareness Saturday. In addition to Saturday’s annual Riverside event, county officials will later host a second event on Oct. 19 in Palm Desert, according to calendar listings in each city. The Riverside walk will take place in Fairmount Park, located at 2601 Fairmount Blvd., and the Palm Desert walk will begin in Civic Center Park, located at 43900 San Pablo Ave.