COLUMBUS, Ohio, May 12, 2025 /PRNewswire/ -- White Castle, America's first fast-food hamburger restaurant and home to The Original Slider®, is recognizing National Slider Day on May 15 by ...

White Castle is offering customers a free original slider on Thursday's National Slider Day. Customers can get a free slider from White Castle on Thursday with a downloaded coupon or with ...

White Castle introduced National Slider Day in May 2015 to honor the slider. “The introduction of the Slider in 1921 helped turn White Castle into a household name and launched the fast-food ...

Fans of White Castle’s original slider are in for a free treat this week. On Thursday, the nationwide chain is celebrating the square beef burger, commonly known as a slider, which launched it ...