"I will not be competing in the Olympics and I think 2023 will be my last year," the athlete said.
The quadruple Olympic champion, who turns 40 in March, could end his career at the London Marathon on April 23.
"I'm not very young anymore. I wish I could finish at home," the four-time Olympic champion said in statements released by race organizers.
But Farah does not rule out being present at the Budapest World Championships, from August 19 to 27, if he is selected.
"If I am chosen, I will never refuse," he said.
Mo Farah has twice achieved the 5,000 and 10,000 meter double at the Games in London in 2012 and Rio in 2016. He has also been world champion six times over these distances but has never won the London Marathon.
In three appearances, his best result was a third place in 2018.
"I'm going to prepare, I'm going to Ethiopia and I'm going to train well to see what I can do in April," said the cross-country skier, who had to withdraw last year due to a back injury. hip.
© 2023 AFP