What’s the difference between running the 100 meters, the 800 meters and running a marathon? We invited three elite runners to run on the world’s fastest treadmill to find out. nyti.ms/3ieCP4n
We used a super slow-motion camera to capture each runner’s stride and analyze how they run. This helped us show the differences between the running form of a sprinter, a middle-distance runner and a marathoner. nyti.ms/3ieCP4n
We learned from the lab at Southern Methodist University that the force a runner drives into the ground with each foot is the key to generating the right balance of speed and energy conservation in each type of race. nyti.ms/3ieCP4n
Running fast or running far: See more of what we learned about how elite athletes run the different Olympic distances. (Plus, see why nearly all runners hate the 800 meters.) nyti.ms/3ieCP4n

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More from @nytimes

30 Jul
The Netherlands scored a goal against the U.S. women’s team in a quarterfinal match at #Tokyo2020. The team leads 1-0. If the Americans lose, they will be out of the tournament.

Follow live updates. nyti.ms/2Www9Gh
The U.S. turns the tables and it’s 2-1 in the blink of an eye.

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30 Jul
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29 Jul
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Simone Biles lost her way midair while vaulting in the women's gymnastics team final at #Tokyo2020 on Tuesday, later explaining that she'd been struggling with the pressure placed on her and wasn't in a good place to compete.

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On average, people spent almost an hour longer each day alone in 2020 than in 2019. Seniors spent the most time alone. But it was young people, especially teenagers, who saw the biggest shift in their social lives. nyti.ms/3f3fT6e
With less time out of the house, Americans stared at screens a lot and groomed less.

Young people were the only group to spend more time on personal grooming in 2020 — and the only group to spend less time working out. nyti.ms/3f3fT6e
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