Happy 18th Birthday, Smashburger! The Denver-born burger chain is celebrating its 18th birthday by offering it loyal customers a juicy deal on its popular burgers — including Singles and Doubles. Do you know where the restaurant chain’s first location is at in Colorado? (Hint: It’s on South Colorado Boulevard in Glendale!)
Image: Smashburger
Smashburger is celebrating the milestone birthday by rolling back prices to its first year in business in 2007.
From June 11 to 30, 2025, Smasburger is offering a Single Burger for just $4.99 or a Double Burger for $6.99 at participating locations in Colorado. Check here for a full list of participating locations in Colorado.
The meaty offer is only available for SmashRewards members. Join SmashRewards here.
There is no limit, so you get enough bargain birthday burgers for everyone at home, in the office or on the team.
The offer is available in-restaurant and online.
You must mention the offer at checkout in-restaurant. For online orders through Smashburger’s site or app, use promo code 499SINGLE or promo code 699DOUBLE, respectively.
Smashburger has 27 locations in Colorado.
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