National French Fries Day is on 13th July.

This week, McDonald's and Wendy's are just two of the chains offering free french fries.

Some require you to download their app, sign up for alerts, or make an in-app purchase in order to qualify for free food.

Here are some of the available options. Always check with your local store to see if it is taking .

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The Burger King:- While there are no freebies available, you can get a 9-piece order of Chicken Fries and large fries for $4.

Sign this petition to have National French Fry Day always fall on a Friday and get free fries from Checkers/ Rally's.

Customers who order through Grubhub will receive a free order of Elevation's olive oil fries between July 13 and July 19.

With any online or in-store purchase, you'll receive a free order of Fat or Skinny Fries. To redeem online, enter the code FrenchFryDay22.

Sign up for a Hardee's My Rewards account via the mobile app, and you'll receive a free small natural cut fry with your in-app purchase.

If you order fries with your Door Dash order, participating restaurants will deduct $5.70 from your total.

Purchase fries in-store or online and receive a free surprise.

McDonald's When you order through the mobile app, a large order of fries costs just $1.

PDQ The chicken restaurant isn't giving away anything, but it is reintroducing its Waffle Fry Shake in honour of the occasion.

Sonic With any in-app purchase, you'll receive a free order of fries or tater tots. A purchase is required, and only one redemption per app user is permitted.

Wendy's is stretching out National French Fry Day with freebies on offer through Friday. On Wednesday, score a free medium fry with any mobile order.  Thursday has been designated Breakfast FryDay, so you'll get a free small breakfast seasoned potatoes. And on Friday, you can multiply your fries by getting a free medium fry with any size fry order made through the mobile app.

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