Mo Farah will target his fifth straight victory at the 2013 Bupa London 10,000 road race today.
He heads an elite field containing some of Britains finest distance runners.
The double Olympic champion is a regular at this 10km central London road event since it started in 2008.
His winning time three years ago of 27 minutes 44 seconds remains the mens course record.
Last year he chose to cruise home in a relatively modest 29:21 as he geared up for a glorious summer which climaxed at the Olympic Games last August when he won gold at 5000m and 10,000m.
More top news
Dozens of women gathered on Westminster Bridge to form a human chain in a show of solidarity with the victims of Wednesday's terror attack.
In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.