Mo Farah says he is better prepared for a marathon than ever before ahead of his run over the 26-mile distance in Chicago next month.
The four-time Olympic gold medallist has switched to road running after ending his track career last year.
His next attempt at the marathon will come in the Windy City on October 7 and he warmed up for that with victory in Sunday’s Great North Run on Tyneside.
Speaking after the success, his fifth in the event, Farah turned his attention to Chicago.
He said: “Training is different as a road runner. I do a lot more long runs and intervals for Chicago. In terms of endurance, I am a lot fitter.
“Usually I run the Great North Run at the end of the track season but this time it’s part-way through a marathon preparation and I’m on the up.
“Training’s gone well in Flagstaff in the last six weeks and my aim now is to stay injury free and focused.”
Chicago will be Farah’s third career marathon and his first outside London, where he set a new British record of two hours, six minutes and 21 seconds in finishing third back in April.
Farah will go up against his former training partner Galen Rupp, the American who is defending the title he won last year, as well as former champions Abel Kirui and Dickson Chumba of Kenya in Chicago in four weeks’ time.