Paula Radcliffe believes Mo Farah won't have it all his own way when he makes the step up to the marathon next season - but the Olympic champion is 'unbeatable' at the World Athletics Championships in Moscow.
The Somalia-born runner is set to compete in the 10,000m and 5,000m.
"He looks unbeatable going to Moscow," Radcliffe told the Evening Standard. His rivals are scratching their heads to see how on earth they can beat him.
"The only way I can see Mo being beaten is if the Kenyans and Ethiopians work together and make sacrifices for just one runner to win it. But even if they do that and set a fast tempo, that doesn't seem to bother Mo as he's got such a kick at the end," she added.
Farah has been in good form this season and is confident of a place among the medals after breaking Steve Cram's 28-year-old British record in the 1500m and coming close to David Moorcroft's 3000m best at the Sainsbury's Anniversary Games last weekend.
After the Championships, Farah is set to turn his attentions to the London marathon. He ran half the distance at the latest marathon as preparation for the intense 26-mile course next April.
Radcliffe, the world record holder for the women's marathon in 2003, insists he cannot go into the race believing he can break all the records.
"He has all the tributes to run well but I don't think he'll suddenly start breaking records straight away," Radcliffe continued.
"It is also a discipline that you need to develop in and I'm sure Mo will be aware of that.
"What Mo has done is absolutely down to hard work. You only have to see how much dedication and work he puts in. His confidence is sky high," she added.
Write for GiveMeSport! Sign-up to the GMS Writing Academy here: http://gms.to/12evFlH