World athletics has ratified Eliud Kipchoge’s marathon world record .
Kipchoge broke his own record in the Berlin marathon in two hours one minute and nine seconds.
The double olympic champion has also confirmed that he will participate in this year’s season starter in Boston.
Kipchoge reached the halfway point in Berlin in 59min 50sec – identical to his half-way split when he produced a sub-two-hour run in an unofficial orchestrated race in Vienna three years ago.
His pace started to drop slightly from then on, but he was still comfortably inside world record pace and recorded the eighth consecutive men’s marathon world record to be set in Berlin.
“I am overjoyed to have broken the world record,” said Kipchoge, speaking just after the race.
“I wanted to run the first half so fast.
“After 38km I knew I would be capable of breaking the world record.”
The Boston Marathon will take place in April.