Denny's 16049 Willowbrook Rd 5:00 AM - 12:00 AM 5:00 AM - 12:00 AM 5:00 AM - 12:00 AM 5:00 AM - 12:00 AM 5:00 AM - 2:00 AM 5:00 AM - 2:00 AM 5:00 AM - 12:00 AM16049 Willowbrook Rd South Beloit, IL 61080 US