June 1, 2021 No Comments FREE Donut at Duck Donuts Stop by a participating Duck Donuts location on Friday, June 4 and get one FREE bare, cinnamon sugar or powdered sugar donut. No purchase necessary. Offer valid on Friday, June 4, 2021 ONLY. Locations. FREE Donut at Duck Donuts – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.