Kalinga Kumarage

Kumarage made his first international appearance at the 2014 Asian Games, where the Sri Lankan 4 × 400 m relay team was eliminated in the heats.

In 2015, he finished fifth in the relay at the 2015 Asian Championships, and was eliminated in the heats of the 400 m with a time of 47.56.

At the 2016 South Asian Games, he won a silver medal in the 4 × 400 m relay behind India.

He then won the silver medal in the men's 4 × 400 m relay at the 2017 Asian Championships with a time of 3:04.80.

At the 2018 Asian Games, he finished eighth in the 400 m in 46.49 and fourth in the relay (3:02.74).

At the 2022 Commonwealth Games, he was eliminated in the semifinals of the 400 m (47.00).

In 2023, he won the gold medal in the men's 4×400 metres relay at the 2023 Asian Championships with a time of 3:01.56, setting a new championship and national record together with Aruna Dharshana, Rajitha Neranjan Rajakaruna and Pabasara Niku.^[2] He also won silver in the mixed relay (3:15.41) with Tharushi Karunarathna and Nadeesha Ramanayake.^[3]

At the 2023 World Championships in Budapest, his relay team ran 3:03.25 minutes and missed the final. Later that year, he finished seventh in the 400 metres (46.22 s) at the 2022 Asian Games, and the mixed relay team was disqualified. However, he won the bronze medal in the men's 4 × 400 m relay (3:02.55) with teammates Dharshana, Niku, and Rajakaruna.^[4]

At the 2025 World Indoor Championships, he placed sixth in the relay (3:10.58). In May 2025, at the 2025 Asian Championships in Gumi, he won bronze in the 400 metres (45.55) behind Ammar Ismail Yahia Ibrahim and Kentarō Satō, and another bronze in the mixed relay (3:21.95) with Sadew Vimansa Rajakaruna, Lakshima Mendis, and Harshani Fernando.^[5] The men's relay team finished fifth (3:08.55).