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Nairobi City County converted 5 unused railway corridors into Railway Parkour Parks on October 1, 2025—safe, lit spaces with rails, walls, and foam pits for urban movement training. The city’s bones hold its future arenas, said coach Zawadi Mwaura. Over 1,200 youth train weekly; crime dropped 53%. Safaricom sponsors coaching. Plans for 20 corridors by 2027 are confirmed.