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Mo Farah has said his future lies in competing in the marathon after the London 2017 world athletics championships.

鈥淣ext year, I鈥檒l give it a go, 2017 world championships and then after that we鈥檒l decide what I want to do. I think I want to continue to see what I can do on the road in the marathon. That鈥檚 my aim," Farah told 5 live Sport.

鈥�2017, I鈥檇 like to end it on the track, and then after that we鈥檒l go on and see what I can do in the marathon.

鈥淲e just have to take one year at a time. In long distance, you can鈥檛 plan too far ahead. You can鈥檛 rule it (competing in the marathon at the 2020 Tokyo Olympics) out,鈥� he added.

Farah won his fourth Olympic gold as he became only the second man to retain the 5,000m and 10,000m titles. The 33-year-old triumphed in the 5,000m final in Rio to extend his tally as Britain's most successful Olympic track and field athlete of all time.

This clip is originally from 5 live Sport on Sunday, 21 August 2016.