Shake Shack Free Burger

Terms and Conditions

Order must be at least $20 (before tax, tip, and fees). Up to $7.79 value. Only valid for ShackBurger, ‘Shroom Burger, Hamburger, and Cheeseburger. Some customization options are not included in the promotion.  Free delivery discount will apply to delivery fee. Service fee and small order fee may apply and may vary. Available at participating Shake Shack restaurant locations only on the Grubhub platform. To redeem, select promotional item on menu prior to checkout. Limited customization options available. No substitutions. Expires 03/20/20 at 11:59 PM CST. Limit 1 redemption per user per day. Participation is subject to the Grubhub Terms of Use, available at