The theory also assumes, without any proof, that the day of Creation was the same length as it is now.If we go by what the Bible says, then the time from creation to today is approximately 6 thousand years.
London City Airport is the closest, approximately 6 miles from the city centre.
From London Bridge station you can walk along Tooley Street to Tower Bridge Road and see the runners just before they cross Tower Bridge at mile 12. Or, walk over London Bridge into the City of London, the race passes underneath London Bridge.