Crossword Genius

Long haul

Ross

I believe the answer is:

'long haul' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for trek that I've seen before include "A long arduous march" , "Extended journey" , "Long hard journey on foot" , "Slog" , "Difficult journey on foot" .)

I've seen this clue in the Newsday and the LA Times.
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