Frankel to race over a mile for first time
Frankel's bid for a 13th successive victory is the equivalent of Usain Bolt stepping up from the 200m to 400m, according to his racing manager Teddy Grimthorpe.
For the first time ever, Frankel is set to race beyond a mile in today's (August 22nd) £725,000 Juddmonte International Stakes at York.
Talking to BBC Radio 5 Live, Mr Grimthorpe said the way that he has handled himself suggests that he will be more than "capable" of staying for at least ten furlongs.
Meanwhile, Frankel's trainer Sir Henry Cecil is hoping he will be well enough to see the 1-7 favourite home.
The 69-year-old has been battling stomach cancer since 2006 and was forced to miss Frankel's most recent victory in the Sussex Stakes at Glorious Goodwood earlier this month.
When asked if the step up for Frankel would be similar to that of Bolt moving to 400m, Mr Grimthorpe responded: "I would think so. It is within his compass, certainly. When they train, they do not train to the exact distance they run, generally."