I found the following example sentence in my dictionary.

川沿いに歩く。Walk along a river.

I looked it up and found out that 川沿い is a noun. Then に should be a particle. But here clearly it doesn’t indicate the location of existence or the direction of motion. So what usage of に is this?

  • It seems to me to be indicating direction of motion. The direction is along the river.
    – A.Ellett
    Apr 4, 2021 at 21:19

1 Answer 1


The phrase A沿いにB means "do B along A". It's commonly used with rivers, railway tracks, roads, anything long.

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