Sharlene Mawdsley

Sharlene Mawdsley (born 10 August 1998) is an Irish athlete who specialises in the 400 metres and other sprint events.

Early life Mawdsley is from Newport, County Tipperary, where she attended St. Mary's School.

She is a graduate of sociology from the University of Limerick.

Mawdsley started competing in athletics as a child. Early in her career, she competed primarily in the 200 m and also in the 100 m. She started focusing on the 400 m in 2019.

Career 2021 Mawdsley competed in the 400 m at the 2021 European Indoor Championships in March and did not advance past the heats.

In May, at the 2021 World Relays, she helped the Irish team finish seventh in the mixed 4 × 400 m relay.

2022 Mawdsley competed at the 2022 World Championships in July, helping the Irish team finish eighth in the mixed 4 × 400 m relay.

In August, she competed at the 2022 European Championships. She did not advance past the heats in the 400 m. In the 4 × 400 m relay, she helped Ireland finish sixth.

2023 Mawdsley competed at the 2023 European Indoor Championships in March. In the 400 m, she advanced to the semifinals. She helped the Irish team finish fifth in the 4 × 400 m relay.

In August, she competed in the 2023 World Championships 400 m semifinals and finals of both the women's and mixed 4 × 400 m relays, running six races in total over nine days. She helped Ireland finish eighth in the mixed 4 × 400 relay and sixth in the 4 × 400 m relay.

2024 Mawdsley competed at the 2024 World Indoor Championships in March. In the 400 m, she initially advanced to the final on merit before being disqualified for obstruction in the semifinals. She then helped the Irish team finish fifth in the 4 × 400 m relay.

In May, at the 2024 World Relays, Mawdsley helped Ireland win the bronze medal in the mixed 4 × 400 m relay. It was her first major international medal.

Mawdsley competed at the 2024 European Championships in June. She helped the Irish team win the gold medal in the mixed 4 × 400 m relay. Running the final leg, she received the baton from teammate Thomas Barr in second place. Mawdsley then passed the leading Belgian Helena Ponette in the home stretch, crossing the line first in an Irish record time of 3:09.92 with the second-fastest female split of the night at 49.40. Mawdsley finished eighth in the 400 m. In the 4 × 400 m relay, she helped Ireland win the silver medal.

On the 9 September 2024, Mawdsley ended her season with a victory in the 400 m at the Gala dei Castelli meeting in Bellinzona, Switzerland. Clocking a time of 51.35, she finished ahead of Susanne Gogl-Walli with 51.39 and Lieke Klaver with 51.42.

2025

Competing at the 2025 World Athletics Championships in Tokyo, Japan, she ran on the opening day in the mixed 4 × 400 metres relay. She also reached the semi-finals of the women's 400 metres.

2026 Mawdsley won over 400 metres at the 2026 Irish Indoor Championships. In May 2026, she competed with the Irish teams at the 2026 World Athletics Relays in Gaborone, Botswana. In June, she lowered her personal best for the 400 metres at the FBK Games in Hengelo, before lowering it again to 50.06 seconds in the 2026 Diamond League event, the 2026 Meeting de Paris on 28 June. 7th relay 3:24.38

Mixed relay 3:09.92 8th 51.58

relay 3:22.71

10th (h) |Mixed 4 × 400 m relay 3:12.67 10th (r) |400 m 51.18 4th |4 × 400 m relay 3:19.90

20th (sf) 400 m 51.22 16th (h) |4 × 400 m relay 3:29.27

Circuit performances