movie where a juvenile is running through fields away from law/people

and there's a song in the background.... and he finally hops on to a goods train.
This sequence happens around the beginning of the movie.

This movie is probably from the 80s (or maybe early 90s).

can some one help me identify the movie (Hollywood movie)

Thanks.

Your description implies a boy, but is it The Journey of Natty Gann?

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