Whilst travelling north, hiding amongst Europeans (2,5)
I believe the answer is:
en route
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for en route that I've seen before include "on the road" , "As part of a journey" , "'On the way (2,5)'" , "While travelling" , "Along the way" .)