The suspended American cyclist Lance Armstrong has been banned from running in next month's Chicago Marathon.
Armstrong was going to be running as a fundraising member of Team Livestrong but was told he could not run.
The cancer survivor was stripped of his record seven Tour de France wins last month and handed a lifetime ban by the United States Anti-Doping Agency after indicating that would not challenge charges that he had doped throughout his career.
Armstrong, whose Livestrong Foundation has raised hundreds of millions of dollars in the fight against cancer, has always denied doping.
