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The Kenyan runner Kelvin Kiptum has just set a new marathon world record. He did it wearing “super-shoes”. Sports brands are racing to design new trainers which are lighter and have clever geometry to propel runners forward.
Email: [email protected]
By BBC World Service4.3
1616 ratings
The Kenyan runner Kelvin Kiptum has just set a new marathon world record. He did it wearing “super-shoes”. Sports brands are racing to design new trainers which are lighter and have clever geometry to propel runners forward.
Email: [email protected]

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