List of Firehouse Subs Stores in Thornton, CO Outlet Note Regular Brands Firehouse Subs Colorado Thornton Rating 4.9 based on 81 votes Official Website http://www.firehousesubs.com/ Products Salads Catering Subs Sub Sandwiches NameAddressPhone Name/Address/Phone Firehouse Subs outlet - Thornton 10060 Grant St (303) 736-8066 People Also Viewed