Washington, D.C. – October 17, 2026 -- Five Guys has a new blackberry milkshake in stores through the middle of August, and shoppers at about 155 locations in DC, Maryland and Virginia can get a free reusable tumbler with it.

The shake is built around Marion blackberries

The seasonal shake highlights Marion and other blackberry varieties. Five Guys describes the flavor as both sweet and tart, and says each shake is hand-spun and thick.