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Length/Distance | Convert from marathon to hair's breadth |
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Common Length Conversions Metric Length Conversions Unit Definition (marathon) A long distance event based on an ancient Greek event, run over a distance of just over 26 miles. Unit Definition (hair's breadth) The hair's breadth is a common informal unit of distance. Human hairs vary considerably in width, depending on age, color, genetics, and other factors. An average hair is approximately 70 to 100 micrometers (µm) in diameter, so, as a rough standard, a hair's breadth is 100 µm or 0.1 millimeter (mm).
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