Loop-the-loop - the people who run around in circles for 24 hours
In a quiet corner of London a small group of extraordinary runners complete laps of an athletics track for a day and a night. Why do they do it? And how far do they go?
In a quiet corner of London a small group of extraordinary runners complete laps of an athletics track for a day and a night. Why do they do it? And how far do they go?
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