Overview

• Shake Shack's National Burger Month promotion features a free burger weekly with a $10 minimum purchase, running from May 1 to June 1.
• The current offer, a free SmokeShack burger, is available until May 11 at participating U.S. locations, excluding drive-thrus, airports, and third-party orders.
• Customers must use the code 'BURGERMONTH' when ordering through the Shack App, online, or at in-store kiosks to redeem the deal.
• The promotion rotates through four signature burgers, with the Bacon Cheeseburger available next from May 12–18, followed by the Avocado Bacon Burger and ShackBurger in subsequent weeks.
• Red Robin is also participating in National Burger Month, offering a $20 Bottomless Burger Pass for daily gourmet burgers throughout May.