Republican Paul Ryan has admitted he did not complete a marathon in under three hours as he said in a nationally broadcast interview.
The US vice presidential hopeful said the information he had provided about his marathon time was inaccurate by over an hour.
He issued the statement ammending the record after Runner's World magazine discovered evidence that he had finished the marathon in just over four hours.
Mr Ryan told radio presenter Hugh Hewitt in August he had run a "two hour and fifty-something" marathon.
That is a speed of just under seven minutes per mile for the 26.2-mile course - exceptionally fast for amateur runners.
Mr Ryan admitted he ought to have rounded up his marathon time to four hours, rather than three.