Crossword Genius

Difficult journey on foot (4)

Ross

I believe the answer is:

trek

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">difficult journey on foot</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for trek that I've seen before include "Long and difficult journey" , "Long walk, expedition" , "A long arduous walk" , "A long arduous journey as in S Africa" , "Long hard journey on foot" .)

I've seen this clue in The Sun, The Mirror and The Telegraph.
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