Nashiba Nabirye gained her first international experience at the 2019 African Games in Rabat , where she made it to the semifinals in the 400-meter run , where she was eliminated with 53.71 seconds. In addition, she won the bronze medal behind Nigeria and Botswana with the Ugandan 4 x 400 meter relay in 3: 32.25 minutes.
In 2019 , Nabirye became the Ugandan champion in the 4 x 400 meter relay.