There are 4 calories in a Large Diet Barq's Root Beer from Firehouse Subs. Most of those calories come from carbohydrates (100%).
To burn the 4 calories in a Large Diet Barq's Root Beer, you would have to run for less than 1 minute or walk for 1 minutes.
TIP: You could reduce your calorie intake by 1 calories by choosing the Medium Diet Barq's Root Beer (3 calories) instead.
Let us know what you think! Review the nutrition facts above and then vote on whether you think a Large Diet Barq's Root Beer is healthy or not.
There are 0 Weight Watchers Freestyle Points, 0 WW SmartPoints and 0 WW PointsPlus in a serving of Large Diet Barq's Root Beer from Firehouse Subs.
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