[3] In 2016, Aron competed at the World U20 Championships and the 2016 Rio de Janeiro Olympic Games.

[4] In 2017 Aron placed 5th at the World Cross Country Championships in Kampala, Uganda; the race was won by Kenya's Geoffrey Kamworor.

[7] On 10 February 2018, Aron won the Eritrean Half Marathon Championships in Massawa, Eritrea in a time of 1:01:08.

[8] Aron represented Eritrea at the IAAF World Half Marathon Championships in Valencia, Spain, placing 3rd in 1:00:31.

Aron ran in the lead pack for much of the race finishing behind Joshua Cheptegei, Jacob Kiplimo, and Geoffrey Kamworor, respectively.

[13] On 12 January 2020 Aron raced the 77th Cross Internacional Juan Muguerza in Elgiobar, Spain.

Aron Kifle was beaten by Kenya's Richard Yator in the final 200 metres to finish 3rd.