You have until November 20.

By Corey Williams
Updated November 14, 2018
Credit: Boston Globe/Getty Images

Chick-fil-A is celebrating the launch of its nationwide delivery service with an amazing promotion: The fast food chain is giving away chicken sandwiches between now and November 20.

You need to act fast, though! There are only 200,000 sandwiches to go around.

WATCH: How to Make the Copycat Chick-Fil-A Sandwich

Here’s how you get one:

Order at least $5 worth of food from Chick-fil-A for delivery through the DoorDash app or website and use the promo code "CFADELIVERY."

The restaurant chain started testing delivery with DoorDash last year.

"So many of our guests' busy lives and family commitments have them strapped for time," Jon Bridges, Chick-fil-A's senior vice president and chief marketing officer, said about the partnership. "Delivery is one way we can help them get a quick yet high-quality meal. If they're unable to come to us, we'll come to them."

Sounds too good to be true, right? Wellll…

There’s a catch: Customers must live within a 10-minute drive of a Chick-fil-A restaurant to access the delivery service or the free sandwich.

Womp womp.

If you’re lucky enough to live 10 minutes from a Chick-fil-A, enjoy that free sandwich for the rest of us.