Tuesday marks National Cheeseburger Day and you can snag a burger at a discount at a number of restaurants throughout the day.

Fuddruckers: hungry eaters can call ahead and take on the three-pound burger challenge. Those that finish the behemoth burger within an hour get a $25 gift card.

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Wendy's: The fast-food giant and queen of social media slams is running a month-long promotion where users get a free Dave's single burger with any purchase after downloading the Wendy's app.

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IHOP: On Sept. 18, order a Steakburger and get a free side of pancakes. See IHOP’s Facebook page for details.

Sonic: Every Tuesday (National Cheeseburger Day happens to fall on a Tuesday), get half price cheeseburgers 5 p.m. to close. Plus, the Carhop Classic deal is back at Sonic. Get a Quarter Point Double Cheeseburger plus medium tater tots for $2.99 all day. Link