The article deals with the meaning of the Czech noun lauf. The relevant dictionaries state only slang meanings ‘(gun) barrel’ and ‘rapid series of tones’. Nevertheless, that does not meet the present word usage. The paper focuses on sports environment, where lauf is commonly used synonym for long-distance run. It also notices nouns laufař/laufařka and observes the usage and meaning of phrases like být v laufu (‘to be in lauf’) and dostat se do laufu (‘to get into lauf’).