unbroken record

Translations
непобитый рекорд
Her unbroken record in the competition is truly impressive.
Ее непобитый рекорд в соревновании действительно впечатляет.
Definitions
An unbroken record refers to a continuous achievement or performance that has not been surpassed or interrupted, often used in the context of sports or accomplishments where a specific standard or score has remained unchanged over time.