Runners to find out if they have won a place in biggest London Marathon ever Runners during the 2019 Virgin Money London Marathon (PA) Thousands of runners will find out on Monday if they have been lucky in the ballot for this year’s Virgin Money London Marathon. Fifty thousand people are expected to take part in the event on October 3 but those who miss out in the ballot will get the chance to sign up for one of a further 50,000 places in the virtual event on the same day. Participants can also apply for a charity place for what is set to be the biggest marathon ever.