Smoothie King is taking high-protein coffee to the next level with a one-day, first-of-its-kind offer as Starbucks unveils its new protein drinks on the same day.
The giveaway is a friendly reminder to those seeking a protein boost that Smoothie King has them covered. The smoothie shop is encouraging coffee drinkers to enjoy a seasonal favorite in a new, protein-forward way.
Check out our big list of deals for National Coffee Day!
This National Coffee Day, Smoothie King is launching a new coffee protein program called “Stars for Smoothies” that lets coffee and protein lovers show their Starbucks Rewards Stars for a FREE protein-packed coffee smoothie at the smoothie shop.
On Sept. 29, 2025, simply show your Starbucks Rewards account for a FREE 20-oz. Coffee High Protein Almond Mocha or Pumpkin Coffee High Protein Smoothie at any Smoothie King location nationwide, while supplies last — from store opening to 10:30 a.m. (Most locations open at 7 a.m.)
Find your closest Smoothie King.
And, not just Starbucks, the giveaway applies to any rewards program from any other popular coffee retailer, including Dunkin’ and more. Please know that we don’t have a list of which other coffee shops’ rewards programs are included.
Don’t worry, there’s no need to redeem any stars or points from your coffee shop loyalty account. You just need to show Smoothie King that you’re a member of any coffee shop’s loyalty program. The easiest way would be to pull up the coffee shop’s app on your phone to show the employee you qualify for the giveaway.
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Double-Check Before You Head Out!
Deals offered by national chains are usually “participating locations only.” We can’t generally verify participation with a particular location, so we encourage you to contact the location to make sure. In addition, limited time offers can end without warning. Deals may not be available when you order from a 3rd party delivery service.
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Smoothie King, participating locations
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