She won the 2024 New York City Marathon and the bronze medal in the 10,000 metres at the 2022 Commonwealth Games.

She defeated Yuriko Kobayashi over 1500 m at the 2005 World Youth Championships in Athletics to claim her first international gold medal.

[2] She failed to improve at the 2008 World Junior Championships in Athletics and did not get past the heats.

[3] Chepkirui joined up with Kenya Defence Forces and began competing at their track competitions again around 2012.

[5][6][7] She was chosen for the 2016 African Cross Country Championships and in her senior debut she took the silver medal as part of a Kenyan podium sweep with Alice Aprot and Beatrice Mutai.