by a long chalk

Translations
с большим отрывом
He won the race by a long chalk.
Он выиграл гонку с большим отрывом.
Definitions
A phrase used to indicate that something is far from being true or accurate, often used to emphasize a significant difference or gap.
Words
by

preposition
с
a

article or possessive pronoun
неопределённый артикль
long

adjective
большой
chalk

noun
отрыв