Lengthy hike (4)

I believe the answer is:
trek
(Other definitions for trek that I've seen before include "Extended journey" , "Slog" , "Long difficult walk" , "Difficult journey on foot" , "Great journey" .)
I believe the answer is:
trek
(Other definitions for trek that I've seen before include "Extended journey" , "Slog" , "Long difficult walk" , "Difficult journey on foot" , "Great journey" .)