Denny's closed about 50 locations in 2024 and plans to shutter an additional 100 restaurants by the end of 2025. Including this year's closures, the 24-hour diner chain still has roughly 1,300 open locations. The restaurants marked for closure are in the lower third of the chain's performers, with annual unit volumes of $1.9 million to $2 million, executives said at the company's investor day in October. Once those restaurants shutter, Denny's expects that both its same-store sales and annual unit volumes will improve. In its latest quarter, the chain's same-store sales were roughly flat. After 2025, Denny's plans to open between 45 and 50 net new locations annually.