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The average roadrunner can actually only go up to about 25 miles per hour, despite most peoples belief. But... The nerdy answer is this. at least 1900mph. Based on the fast that he can out run a hunting rifle bullet. which if you use a common round say the 30-06 which travels at 2700fps or 1850mph. His top speed is wa above that as he esily runs away form the bullet.

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11y ago

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