Free donuts will be available at several places in honor of the holiday One of the best combos seems to be coffee and donuts, and tomorrow, June 3rd, fans of those particular treats will be able to take advantage of major deals-including free donuts-at several establishments in honor of National Donut Day! The following deals will be available in honor of the special food holiday: Busken Bakery: Get a free Glazed Donut while Supplies last Cumberland Farms: With the purchase of any coffee of chill zone beverage, get a free donut Duck Donuts: Get a free sugar donut, no purchase required Dunkin Donuts: Purchase any coffee or cold beverage and get a free donut of your choice Entenmann's: Enter their sweepstakes to potentially be one of 10 lucky winners who can get free donuts for an entire year Fractured Prune: Offer varies depending on location.