Kenny represented Ireland at the 2019 European Athletics U23 Championships in the 20 kilometres walk and finished in ninth place with a personal best time of 1:25:43.

[1] He again represented Ireland at the 2021 European Athletics U23 Championships in the 20 kilometres walk and won a silver medal with a time of 1:25:50.

[2][3] Kenny is coached by former Olympic medal-winning race walker Robert Heffernan.

[4] He represented Ireland at the 2020 Summer Olympics in the men's 20 kilometres walk and finished in 29th place.

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