The free short stacks are available at most of their restaurants and are limited to one free stack per dine-in customer.
The deal is not available for carry-out orders.
You can also get an "all-you-can-eat" pancake deal with a breakfast combo at some locations, just ahead of Lent. Those who dine-in will be entered to win several prizes, including a grand prize of pancakes for life.
Visit ihop.com/en/national-pancake-day for more information.