How Long to Burn Off McDonald's Fries
Dominic Acito
Jun 20, 2026
McDonald's french fries are one of the most recognisable fast food items in the world — and one of the most calorie-dense sides available. A large order contains 490 calories, a medium 320 calories, and a small 220 calories. Here's what that means in exercise terms.
McDonald's Fries Calories by Size
Small (230g serving): 220 calories
Medium (117g serving): 320 calories
Large (154g serving): 490 calories
How Long to Burn Off a Large Fries (490 calories)
For a 155-pound person:
Walking at 3 mph: approximately 79 minutes (1 hour 19 minutes)
Running at 6 mph: approximately 37 minutes
Cycling at moderate intensity: approximately 54 minutes
HIIT workout: approximately 34 minutes
How Long to Burn Off a Medium Fries (320 calories)
For a 155-pound person:
Walking at 3 mph: approximately 52 minutes
Running at 6 mph: approximately 25 minutes
Cycling at moderate intensity: approximately 35 minutes
Fries vs the Burger: Which Has More Calories?
A large fries at 490 calories actually comes close to matching a standard McDonald's burger in calorie terms.
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