Want a free burger? Today's the day to head to White Castle. You can get a free Original Slider at White Castle on May 15 to celebrate National Slider Day. No purchase is required.

This year, White Castle is continuing its tradition of offering a complimentary original slider to commemorate National Slider Day.

Lucky for us, White Castle is giving away free sliders on May 15 in celebration of National Slider Day, and all you have to do is download the app. Simply enter code SLIDERDAY in the app at the ...

White Castle is offering a free Original Slider on May 15th, 2025, in celebration of National Slider Day. Currently, there is only one White Castle location in Florida, in Orlando not far from Disney.

White Castle is celebrating its iconic original slider on Thursday, which is deemed National Slider Day by the nationwide chain.

White Castle is celebrating its Original Slider with a one-day giveaway. On Thursday, May 15, anyone can get a free Original Slider when they order online or in the White Castle app on National ...

Every customer can enjoy one complimentary Original Slider; no purchase necessary to redeem offer White Castle is also offering limited-time deal: six Original Sliders for $4 COLUMBUS, Ohio, May ...