[1] Kemboi attended St Patrick's High School in Iten, in the west of Kenya, 350 kilometres north-west of Nairobi.

[2] Competing at the 2022 Commonwealth Games, in Birmingham, Kemboi finished eleventh in the final of the 5000m.

[3][4] Kemboi ran a new personal best 5000m time of 13:00.68 at the Night of Athletics meeting in Heusden, Belgium in July 2023.

[7] He was selected for the 2023 World Athletics Road Running Championships in Riga, and finished fifth in the men's 5 km race on 1 October 2023.

[8][9] In January 2024, he won the Discovery Cross Country race in Eldoret in a time of 29:42.