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I've done my training (variously excruciating, exhausting, unrelenting, boring); I've read everything there is to read about energy drinks (a surprising amount). And I've addressed the more intimate issues no one ever mentions - chafing... toe rot... over-active bowels...
Now I'm facing down the barrel of those 26.2 miles (never, ever forget the .2) with only my puny legs, a bottle of Lucozade and the question: good heavens, what have I done? To cling to
So, if you want to see the best of London - by which I mean the bridges, the palaces and the 35,000 deranged/inspirational sweaty bodies who've strangely chosen to pound between them, this is the day to be a tourist.
And if you're there, look out for me among the 34,999 others (purple vest, purple face - can't miss me) and give me a cheer - and do the admiring of the landmarks for me.
Sarah is running the Flora London Marathon on behalf of her cousin Jack, by running for the National Autistic Society. The NAS provides vital support to those with autism and their families; if you'd like to support them too, she'd love it if you could visit her Fundraising Page
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