How far and how fast can a person walk in a day?

If a person is traveling across country how far will he normally travel in a day by walking and or by horseback?From St Louis to Oklahoma City or from

If a person is traveling across country how far will he normally travel in a day by walking and or by horseback?
From St Louis to Oklahoma City or from San Francisco to Sacramento.

or:If a person is traveling across country how far will he normally travel in a day by walking and or by horseback?From St Louis to Oklahoma City or from San Francisco to Sacramento.

or:That might be any number. The pioneers considered a day's walk to be 12 miles, or 24 miles on a horse. When Olive Oatman was captured by Apache Indians, she recorded that they marched her 250 miles in 80 hours, and that included time spent sleeping, slaughtering animals, and eating.

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