Mo Farah has withdrawn from this Sunday's Bupa London 10km race due to a lack of race fitness.
The 31-year-old, who won the event last year, is not yet race-ready and will therefore miss the chance to defend his title, reports Athletics Weekly.
Farah had been due to return to the streets of London to race for the first time since making his marathon debut in April. But his agent, Ricky Simms, has confirmed this will not happen, although he will still be a guest at the event.
"Mo has decided not to compete in the Bupa London 10,000 because he is not yet ready to race after the London Marathon," Simms was quoted as saying.
"He took a few weeks off training, went on holiday, and just resumed jogging 10 days ago. He looks forward to being a guest at the event."
The decision would not have been an easy one for Farah, though. After a disappointing marathon where he could only manage eighth, the double Olympic champion from London 2012 would have been hoping to put on a good showing in his preferred distance .
He will have to stick to official starting duties, though, and watch on as the other athletes compete.
Andy Vernon and Ryan McCleod have been added in Farah's place. The event takes place on May 25.
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