[3][4][5][6][7] Her sister, Courtney, has played for Hermes-Monkstown in the Women's Irish Hockey League and the EuroHockey Club Champions Cup .

[3][11][12][13][14] Watkins played field hockey for St. Andrew's College in a team that also included her older sister, Courtney and Gillian Pinder.

[18][19][20] In the 2010 final Chloe Watkins captained St. Andrew's as they defeated an Alexandra College team that featured Deirdre Duke and Emily Beatty.

[21] In 2010 Chloe Watkins and Gillian Pinder were also members of the St. Andrew's College team that won the Kate Russell All-Ireland Schoolgirls Championship, defeating Coláiste Iognáid, Galway 3–1 in the final.

[3][4][22] On 10 September 2018, after their success at the Women's Hockey World Cup, Watkins and Pinder returned to St. Andrew's to share their experience with the current students at St.

[3][36][37] In 2015–16, together with Anna O'Flanagan and Nicola Evans, Watkins was a member of the Hermes team that won the Women's Irish Hockey League title and the EY Champions Trophy.

[45][46] Watkins made her senior debut for Ireland, aged 18, in July 2010 against Scotland, just a couple of months after completing her Leaving Cert.

[3][4][10] In March 2015 Watkins was a member of the Ireland team that won a 2014–15 Women's FIH Hockey World League Round 2 tournament hosted in Dublin, defeating Canada in the final after a penalty shoot-out.

[47][48] She was also a member of the Ireland team that won the 2015 Women's EuroHockey Championship II, defeating the Czech Republic 5–0 in the final.

[49] In January 2017 she was also a member of the Ireland team that won a 2016–17 Women's FIH Hockey World League Round 2 tournament in Kuala Lumpur, defeating Malaysia 3–0 in the final.

[50] Watkins represented Ireland at the 2018 Women's Hockey World Cup and was a prominent member of the team that won the silver medal.