There are 754 calories in Large Onion Rings from Fuddruckers. Most of those calories come from carbohydrates (100%).
To burn the 754 calories in Large Onion Rings, you would have to run for 66 minutes or walk for 108 minutes.
TIP: You could reduce your calorie intake by 188 calories by choosing the Medium Onion Rings (566 calories) instead.
Let us know what you think! Review the nutrition facts above and then vote on whether you think Large Onion Rings is healthy or not.
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