Paula Radcliffe's injury comeback may be stalling but America's Deena Kastor has confirmed her appearance in next month's Bupa Great Edinburgh Run.


Kastor, who won bronze at the 2004 Olympic marathon, broke her foot in Beijing last week and was forced to pull out three miles into the race.


But she insists there have been no problems with her recovery - and has vowed to take on Radcliffe at London 2012 as the world record holder seeks to make it third time lucky in Olympic marathons.


"My training has been great over the past two months," she said. "Since Beijing went terribly wrong I guess you can bet I'll be around for another four years,"


But Andy Caine, the Edinburgh event's elite athletes' manager, believes Kastor will be tested over the 10,000m course.


"We're delighted to welcome Deena who is the Paula Radcliffe of American distance running to our meeting and I know she wouldn't be coming unless confident she can produce a good performance," he said.


"She's accepted a massive challenge, particularly with Jelena Prokopcuka a three-times Edinburgh champion returning this year and other top European stars also in the field.


"This is all about rehabilitation for her and I understand after a few more shorter races she'll be looking to return to marathon running in the autumn."