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The average walking speed for a healthy adult, not carrying additional weight on a level surface is approx 3.1 mph. If that rate could be maintained, it would take nearly 22 hours. However, that assumes 22 hours without rest, comfort breaks etc.

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7y ago

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Wiki User

7y ago

between 22 and 23 hours

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Wiki User

12y ago

1 hour 39 minutes and 44 seconds total

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