How Many Calories Does Running a Marathon Burn?

According to this infographic, the equivalent of about 8.6 slices of pizza
By Adrian Grycuk (Own work) [CC BY-SA 3.0 pl], via Wikimedia Commons

For those who want to lose weight, signing up for a marathon (aka committing to a training schedule that consists of running 3 to 6 days and 20+ miles per week for somewhere around 16 weeks) is a smart way to ensure that you’ll stay dedicated to a workout routine.

No one runs a marathon solely for the sake of burning calories, but because the prospect of completing 26.2 miles is incredibly motivating, many athletes do sign up, train and race with weight loss goals in mind.

This might make you wonder, how many calories do you burn while running a marathon?

Well, exact calorie burn will vary from person to person, but a ballpark estimate from the folks at Medifast puts the burn rate at about 100 calories per a mile.

That adds up to a whopping 2,600 calories for the entire race.

And for the 50,000 runners expected to complete the New York City Marathon this year, that’s a combined 130 million calories in total.

Curious how much food that adds up to? Check out the infographic below to find out the exact amount of pizza, bagels and ice cream that equals. (Hint: it’s an enormous amount!)