Burger King Whopper Detour: How a One-Cent Whopper Turned McDonald's Into a Download Button

In December 2018 Burger King made an unusual offer. You could buy a Whopper for one cent. There was only one condition: you had to be standing within 600 feet of a McDonald’s.

The campaign, called Whopper Detour, used the Burger King app and location technology to turn every McDonald’s in the US into a place to order a Burger King burger. It became one of the most awarded mobile campaigns in history.

The Context

By 2018 the big fast food chains were in a race to build mobile ordering. Apps gave chains customer data, reduced queues and encouraged repeat visits. But getting people to download and use another restaurant app was hard. Most people already had too many apps, and Burger King’s was far behind McDonald’s in use.

Burger King was also the challenger in its category. McDonald’s had many more restaurants and a much bigger marketing budget. Burger King had built a reputation for cheeky, confident advertising that often poked fun at its larger rival.

The brief was clear: get people to download and use the new app. The challenge was making that interesting.

The Campaign

FCB New York designed a mechanic that combined the app goal with Burger King’s rivalry with McDonald’s. Burger King geofenced thousands of McDonald’s locations across the US. When a customer with the Burger King app went within 600 feet of a McDonald’s, the app unlocked a Whopper for one cent. The app then directed them to the nearest Burger King to collect it.

In other words, to get the deal, you had to go to McDonald’s first.

The offer ran for a limited period in December 2018. It was launched with a video that explained the mechanic in a playful, documentary style. It showed people pulling into McDonald’s car parks, opening the Burger King app and receiving their one-cent Whopper offer, then driving off to the nearest Burger King. The video emphasised how absurd the situation was, and media coverage focused on the audacity of the idea, which spread it further.

The technical side was important. Geofencing was not new, but using it at this scale, across thousands of competitor locations, was unusual. The app had to detect when a customer entered the geofenced area, unlock the offer and then guide them to a Burger King restaurant to collect the order. For many customers, the experience of seeing the offer appear on their phone while sitting outside a McDonald’s was part of the fun.

The campaign also had a deliberate timing. It launched as part of a larger push to promote Burger King’s new app and mobile ordering, so it gave the company a clear reason to talk about the app while introducing new features to customers.

Why It Worked

It made a dull goal fun. Downloading an app is a chore. Driving to a McDonald’s to trick it into giving you a Burger King Whopper is a small adventure. The mechanic turned a business objective into a story people wanted to take part in and tell others about.

It used the rival’s size against it. McDonald’s larger network was usually Burger King’s disadvantage. Here it became an asset. Every McDonald’s restaurant was effectively a Burger King promotion point, at no cost.

The price was unbeatable. One cent is close enough to free to feel like a steal, and easy to explain in a headline.

It fitted the brand. Trolling McDonald’s was already part of Burger King’s personality. The campaign felt like a natural continuation of that voice rather than a random promotion.

It built something lasting. The goal was not just the one-cent Whopper. It was getting the app onto phones. Once downloaded, the app could be used for future orders.

The Results

The Burger King app was widely reported to have been downloaded about 1.5 million times in the first nine days of the promotion, and it reached number one in the US App Store. Burger King said mobile orders rose sharply as a result, and the campaign generated a large amount of free media coverage.

At Cannes Lions 2019, Whopper Detour won three Grand Prix, in the Titanium, Direct and Mobile categories. It became one of the defining examples of using location technology creatively.

The campaign became a textbook example of how to turn a functional goal into a creative idea. It is widely taught in marketing courses and cited in discussions about mobile marketing, challenger brands and the use of competitors in advertising. It also showed how location data could be used creatively, rather than only for targeting ads.

For Burger King, it was part of a run of bold campaigns under its global marketing leadership in the late 2010s, including the “Moldy Whopper” and “Burning Stores” campaigns. Together, these campaigns built a reputation for creative risk-taking that helped the brand stand out against larger competitors.

The Lesson for Today’s Marketers

Every brand has dull goals: downloads, sign-ups, account registrations. The best campaigns find a way to make those goals fun and give customers a reason to act that is more interesting than “download our app.”

Whopper Detour also shows how a challenger can use a larger competitor’s strengths against it. Rather than fighting McDonald’s size, Burger King borrowed it.

Finally, the mechanic was the message. There was no need for a long explanation. The idea could be told in one sentence, which is why it spread so quickly.