3 Reston Businesses Celebrate Pi Day With Special Deals

RESTON, VA — Three Reston-area businesses will be celebrating Pi Day on Saturday, March 14 with special prices, flavors and equations.

The first Pi Day was organized in 1988 by Larry Shaw at the Exploratorium in San Francisco as a way to celebrate the mathematical symbol π, which is used to calculate the area, volume, and circumference of a circle.

Pi Day is celebrated on March 14 because it occurs on the third month of the year and on the 14th day, which is abbreviated 3/14, the first three figures of π (3.14159).

Wiseguy Pizza is serving up giant New York-style slices for just $3.14 (cheese and pepperoni) using code PIDAY2026 at checkout. This deal is available at the Wiseguy at 1142 Elden St. in Herndon.

Crumbl at 11686 Plaza America Drive in Reston will be unveiling a special Pi Day flavor. Customers can expect a fun mix of possibilities for the bonus pie flavor, from tangy Key Lime Pie and decadent Raspberry Cream Pie, to rich French Silk, zesty Lemon Pie, or a fudgy Brookie Pie.

For those looking to lean into Pi Day's mathematical side, the Mathnasium of Reston at 11650 Plaza America Drive is hosting a free Pi Day celebration The event will include free pizza, prizes, hands-on STEM activities, games, and crafts — no calculators or registration required.