Denny's 612 Contra Costa Blvd. 6:00 AM - 11:00 PM 6:00 AM - 12:00 AM 6:00 AM - 12:00 AM 6:00 AM - 12:00 AM 6:00 AM - 12:00 AM 6:00 AM - 12:00 AM 6:00 AM - 11:00 PM612 Contra Costa Blvd. Pleasant Hill, CA 94523 US