There are 300 calories in a Large Red Flash from McDonald's. Most of those calories come from carbohydrates (100%).
To burn the 300 calories in a Large Red Flash, you would have to run for 26 minutes or walk for 43 minutes.
TIP: You could reduce your calorie intake by 80 calories by choosing the Medium Red Flash (220 calories) instead.
According to our website visitors, a Large Red Flash is not a healthy and nutritious option from McDonald's, with only 19% of voters finding it to be healthy.
Let us know what you think! Review the nutrition facts above and then vote on whether you think a Large Red Flash is healthy or not.
There are 19 Weight Watchers Freestyle Points, 19 WW SmartPoints and 9 WW PointsPlus in a serving of Large Red Flash from McDonald's.