Happy 40th Birthday, Five Guys! (Do they get five separate birthday wishes?) Five Guys recently celebrated its 40th birthday with a rare buy-one-get-one offer on February 17, 2026. However, the response was bigger than expected — probably because they never offer any deals! Frustration and chaos ensued, as many locations ran out of ingredients and fans had trouble accessing the deal online.
Image: Five Guys
Fortunately, Five Guys is doing the right thing and making it up to its loyal fans for four days.
From March 9 to 12, 2026, Five Guys is again offering a buy-one-get-one FREE burger (of equal or lesser value) at participating locations — in celebration of its milestone 40th birthday for a second time.
The offer is only available when you order online via Five Guys’ site or app — use promo code FGAFTERPARTY at checkout. The offer is not available in-restaurant.
You must have a Five Guys account to qualify for the offer. (Five Guys does not have a loyalty program.)
NOTE: Enter the code in your bag before checking out to unlock the offer.
Limit one redemption per reward code, per transaction and per account.
There are 31 locations in Colorado.
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