when she set the world record of 2:15.25 in the london marathon , there was no grinning until after she crossed the line .
similarly in 2005 when she recorded her third and final victory over the 26.2 mile course from blackheath to the mall , emotions were kept in check until the end .
but a time no woman has threatened 12 years , radcliffe said the time was irrelevant in her final london marathon .