Pace Calculator
Calculate running pace, time, or distance
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Running Facts
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Fastest Marathon
Kelvin Kiptum ran 2:00:35 in Chicago 2023, the current world record
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Human Efficiency
Humans are among the best endurance runners in the animal kingdom
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Bolt's Top Speed
Usain Bolt reached 27.8 mph (44.72 km/h) during his 100m world record
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Heart Rate
Elite runners maintain 160-180 bpm during marathons
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Ancient Sport
Running competitions date back to 776 BC in ancient Olympic Games
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Mental Benefits
Running releases endorphins, reducing stress and improving mood
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Steps Per Mile
Average runner takes 1,400-1,700 steps per mile depending on stride
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Barefoot Running
Humans ran barefoot for millions of years before modern shoes