A giant Jersey Mike's sub is approximately 14 to 15 inches long. This size is about double the length of their regular sub, which is around 7 inches, and significantly larger than their mini sub, which measures about 5 inches
. The exact circumference and overall size can vary depending on the type of bread, meat, cheese, and toppings chosen. The giant sub is notably larger than many competitor chain sandwiches, such as Subway's 12-inch footlong and Firehouse Subs' 12-inch maximum size. Only a few chains, like Jimmy John's with its 16-inch J.J. Gargantuan, offer larger sandwiches
. In summary, the giant Jersey Mike's sub is a substantial sandwich, typically 14-15 inches in length, making it one of the largest standard sub sizes available at sandwich chains
