Rory Millikin, president of Spin Fresh, starts day one of the Fast Casual Executive Summit as a participant on the Fast Casual Food Tour. The first stop on Sunday's tour: Five Guys Burgers and Fries.

John Chen, CEO of Urban Eats, checked out the operations at Five Guys Burgers and Fries. Stops on the food tour included Corner Bakery Cafe, Portillo's, Flat Top Grill, Tom & Eddie's, Jimmy John's, Bruegger's and Qdoba.

Rory Millikin and George Green, vice president of Bread and Company, shared a table while waiting for their food at Five Guys Burgers & Fries.

Attendees were ready for their sampling of Five Guys Burgers & Fries. The food tour, in its second year, was developed for the Fast Casual Executive Summit as a good way for operators to bond during the event.

Part of the food tour included trivia questions for each of the restaurants. At Five Guys Burgers & Fries, print clippings from stories about the chain provided helpful information.

Caya Chen, wife of John Chen, CEO of Urban Eats, displayed a menu item at Go Roma.

One of the stops was at the new brand Tom & Eddie's, a hamburger restaurant in Lombard, Ill.

Thomas Dentice (left) and Ed Rensi (right), founders of the new Tom & Eddie's, pose with Kevin Minor from Sky's Gourmet Tacos.

Tom & Eddie's staff and Summit attendees enjoying the tour stop.

Even Ed Rensi -- founder of Tom & Eddie's and the former CEO of McDonald's -- had to take the trivia quiz.

Leo Paulus, owener of Greek Souvlaki, studies at the Wing Stop menu.