One travelling a long time during very ordinary year (7)
I believe the answer is:
voyager
'one travelling a long time' is the definition.
(someone on a voyage)
'very ordinary year' is the wordplay.
'very' becomes 'v' (abbreviation).
'ordinary' becomes 'O' (abbreviation e.g. O-Levels).
'year' becomes 'yager' (I can't justify this - if you can you should believe this answer much more).
'v'+'o'+'yager'='VOYAGER'
'during' is the link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for voyager that I've seen before include "Seafarer" , "Person making a journey on water or in space" , "Traveler to a distant land" , "Traveller to a distant land" , "One on a long journey" .)