Is there an optimum style for running the marathon?
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Marathon - Wikipedia
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Marathon
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How marathon records have improved as Eliud Kipchoge runs distance in under two hours | Guinness World Records
Why is a marathon 26.2 miles? - The A Change of Pace Foundation
What Half-Marathons Teach Us About Running a Marathon - The New York Times
Long-distance running | Definition, History, & Facts | Britannica
:max_bytes(150000):strip_icc()/484546393-56a814f35f9b58b7d0f0797b.jpg "How Many Miles Is a Marathon? Marathon Miles and Kilometers")
How Many Miles Is a Marathon? Marathon Miles and Kilometers
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Who are the marathon GOATs: Records, most successful runners, and stats
Molly Seidel: How distance runner overcame 'imposter syndrome' and 'blew away' her expectations in the marathon | CNN
Marathon coach Bob Larsen: distance runners are 'almost like a race car' | Rio 2016 | The Guardian
Marathon goes full distance|Snapshots|chinadaily.com.cn
Marathon
Marathon
Long-distance running and evolution: Why humans can outrun horses but can't jump higher than cats.
Why is a marathon 26.2 miles?
