He has represented Great Britain at senior level and is a twice English National Cross Country Champion.

[1] Mahamed was born in Jarso, Ethiopia on 18 September 1997 and emigrated to Southampton in England with his family in 2011 when he was thirteen years-old.

[3][4] Mahamed won the national U17 cross country title at Parliament Hill, London on 25 February 2015.

[10] In September 2023, he finished second at The Big Half in London behind Jack Rowe and ahead of Andrew Butchart and Mo Farah, in his final race.

A Muslim, Mahamed has explained to BBC News how keeping his fitness whilst he observes Ramadan is a challenge but worthwhile to his faith.