[1] Noora Kaisa Keränen made her international debut at the 2018 Youth World Championships in Otepää, Estonia.
After another year in the junior ranks, the Finn made her IBU Cup debut in early 2021 at Arber, where she finished in the top ten in the single-mixed relay.
She secured another medal by finishing third in the sprint at the 2022 IBU Junior Open European Championships, behind Selina Grotian and Chloé Bened.
In the Lenzerheide sprint competition, the Finn earned her first World Cup point, finishing 40th despite one shooting miss.
[3] Noora Kaisa Keränen has two older sisters, Maija and Jenni, who are twins and were also active as biathletes, particularly at the junior level.