National Doughnut Day is 1 June, and a number of chains and local outlets participated with promotional specials and free goods.
Krispy Kreme started early by tweeting about its National Doughnut Day giveaway on 25 May 2018:
Decision you'll have to make on #NationalDoughnutDay: Original Glazed or Chocolate Iced?
Decision you won't have to make: Cash or card?
Get a FREE doughnut June 1!
— Krispy Kreme (@krispykreme) May 25, 2018
Although no purchase was necessary for that promotion, competitor Dunkin' Donuts offered a freebie with the purchase of a beverage:
— Dunkin' Donuts (@dunkindonuts) May 30, 2018
Edible Arrangements introduced a new product ("Edible Donuts") to coincide with National Doughnut Day, and offered the new fruit-based product for free on 1 June 2018:
— Edible Arrangements (@edible) May 31, 2018
The chain also tweeted multiple times to clarify the treat's nomenclature:
Haha it's a fair question—and while that may be true, they've never been Edible® before! We've taken a fresh twist on this classic treat and you can try one for FREE this Friday just for visiting your local store. #NationalDonutDay
— Edible Arrangements (@edible) May 30, 2018
Kwik Trip announced a freebie for members of its rewards club:
— Papa John's Pizza (@PapaJohns) May 30, 2018
Tim Horton's US planned a giveaway at five American locations:
Talk about a golden opportunity! Be the first in-restaurant Guest after 6am on June 1st to ask for the “Gold Timbits®” at one of five specially selected locations in Buffalo, Columbus & Detroit & you could win free donuts for a year! No purchase necessary: https://t.co/CtYpr3Nyrt pic.twitter.com/V612wPk3Vt
— Tim Hortons U.S. (@TimHortonsUS) May 30, 2018
Finally, Burger King released a highly shareable video for an unusual and extremely limited promotion on 2018's National Doughnut Day:
A description for the clip mentioned participating restaurants in a total of five cities:
On June 1st, the BURGER KING® brand will launch the first flame-grilled donut ever, the WHOPPER® Donut. Some of you might say it’s just a WHOPPER® sandwich with a hole cut in it, and you might be right. But, hey. If it has a donut hole in it, it’s a donut. Only at select restaurants* in New York, L.A, Miami, Boston & Salt Lake City.
P.S.: It comes with a “free” mini slider.
In addition to national chains, many local and regional doughnut shops offered freebies and other promotions.