National Pi Day in 2026 is being marked with various food deals, including discounted pizza and pie offers from several restaurants. Some outlets are reporting that certain establishments, such as Burger King, 7-Eleven, and Papa John's, are participating in the promotions, while others are highlighting specific deals like $3.14 pizzas. The availability and specifics of the deals appear to vary by location, with some outlets providing information on offers in specific states like Arizona and California.