Homeric journey (7)
I believe the answer is:
odyssey
'homeric journey' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for odyssey that I've seen before include "Long, eventful, wandering journey" , "Homer epic" , "Greek epic on the wanderings of Ulysses" , "A long adventurous, as told by Homer" , "Homer's epic poem" .)