Denny's 612 Contra Costa Blvd. 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM 7:00 AM - 12:00 AM612 Contra Costa Blvd. Pleasant Hill, CA 94523 US