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Runners were turning back within a mile of the start and over ten per cent of the field dropped out before the first checkpoint .
We've also got a big decision coming up because we've decided to walk another 10 kilometres to the next checkpoint .
Two young female staff aides carried it right through a security checkpoint .
When he entered he was stopped by a security guard at the entrances checkpoint .
He was almost exhausted by the run from the entrance to the security checkpoint .
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