Across the U.S., donut distributors – large and small – also participate in National Donut Day; big names Dunkin' and Krispy Kreme, which officially call them "doughnuts," will be giving away free donuts on June 6.

Dunkin' Donuts is offering a free classic donut with the purchase of any beverage on Friday, June 6th, so head down to your local Dunkin's to kickstart your day. But that's not al