Britain's Mo Farah runs during the men's race at the London Marathon in London, on April 23, 2023. (PHOTO / AP)

Britain's four-times Olympic champion Mo Farah said he will end his athletics career at the Great North Run in September.

Farah finished ninth in his final marathon in London on Sunday, clocking 2:10:28 - nine minutes behind winner Kelvin Kiptum.

The 40-year-old will compete at the 10km Great Manchester Run on May 21 before the Great North Run half-marathon on Sept 10.

"Part of me was wanting to cry," Farah told BBC on Sunday after the London Marathon. "I will miss that feeling, I am emotional today.

Britain's Mo Farah attends a press conference after finishing the men's race in 9th place at the finish of the 2023 London Marathon in central London on April 23, 2023. (PHOTO / AFP)

"I want to pass that on. The Great North Run is going to be my last ever run and that will be my goodbye.

READ MORE: Farah returns for UK marathon before likely 2023 retirement

"My career has been amazing, my wife and kids have been with me throughout this journey and I want to give time to them now, as well as getting involved in grassroots sport and give back to this sport."

Farah has won the Great North Run six times.