In celebration of its 20th anniversary this upcoming Saturday, Chipotle Mexican Grill will be offering its loyal customers the opportunity to win free burritos for the next 20 years. Burrito aficionados will have to stretch their minds before stretching their waistline by completing a series of puzzles in the "Adventurrito" treasure hunt.

"Our 20th anniversary wouldn't be possible without the continuing support of so many loyal customers and fans," Mark Crumpacker, Chipotle's chief marketing officer, said in a statement.

"'Adventurrito' reflects the fun, irreverent side of Chipotle, and offers a fun way for fans to celebrate our anniversary while getting the chance to win the ultimate Chipotle prize - free burritos for up to 20 years."

Staring this Saturday, contestants will be asked to complete a new puzzle each day for a total of 19 days. On the 20th day of the fast-food competition, players who answer all 19 puzzles correctly will receive "FREE BURRITOS FOR 20 YEARS." A stipulation that's probably best for the contestants' daily calorie intake, winners are limited to one burrito a week.

From the amount of restaurant goers expected to compete in "Adventurrito," 20 people may seem like a long shot for a burrito a week until 2033. But don't worry guacamole lovers — each day of the competition, 20 contestants will be chosen at random to receive the daily sweepstakes of "FREE BURRITOS FOR A YEAR." As Chipotle's website states, "19 days, 20 winners per day, 380 happy people."

"Twenty years in, we are changing the way people think about and eat fast food," said Steve Ells, founder, chairman, and co-CEO of Chipotle.

"That vision has connected with a lot of people and helped to make them very loyal customers. In celebrating this milestone, we thought giving something special to our customers was the right thing to do, since they have given so much to us over the years."

Although a nice gesture and great marketing strategy, let's not make any illusions about what we're dealing with in between that flour tortilla. A steak or chicken burrito with white rice, black beans, sour cream, and guacamole can run up to as much as 1,040 calories in one meal. Of course, cutting out the fat- and calorie-packed sour cream option will help knock 100 calories off of your order.