ハイレ・ゲブレセラシェの１００００メートルの最高記録は？
In September 2008, at the age of 35, he won the Berlin Marathon with a world record time of 2:03:59, breaking his own world record by 27 seconds. The record stood for three years. Since he was over the age of 35, that mark still stands as the Masters Age group world record.
27 seconds