Crossword Genius

Arduous journeys (5)

Ross

I believe the answer is:

treks

'arduous journeys' is the definition.
(I've seen this in another clue)

This is all the clue.

(Another definition for treks that I've seen is " migrations".)

I've seen this clue in the LA Times, The Wall Street Journal, the King Feature Syndicate, The New York Times and the Newsday.
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