Tough hike (4)
I believe the answer is:
trek
(Other definitions for trek that I've seen before include "Slog" , "Difficult journey on foot" , "Long difficult walk" , "A long arduous journey as in S Africa" , "Extended journey" .)
I believe the answer is:
trek
(Other definitions for trek that I've seen before include "Slog" , "Difficult journey on foot" , "Long difficult walk" , "A long arduous journey as in S Africa" , "Extended journey" .)