Imagine a couple going on the left sidewalk but this side isn't comfortable as the second side is, and then the girl asks the guy beside her "Why are we going ___ this side"? What preposition would be correct to choose in this context?

"Why are we going in this side?"


"Why are we going on this side?"


"Why are we going by this side"?

I created a photo with an explanation to make my question understandable.

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  • 2
    Definitely "on".
    – ralph.m
    Dec 10, 2018 at 21:44
  • on because you walk on pavement. You are not by or in anything
    – user3169
    Dec 11, 2018 at 1:48
  • 2
    Why are we walking on this side of the street? Full context.
    – Lambie
    Jul 25, 2020 at 23:28
  • Yes the preposition is definitely "on". But "going", in this context, is not idiomatic - though the meaning is clear. It needs to be "Why are we walking on this side..."
    – WS2
    Jul 22 at 21:37

1 Answer 1


On this side.


1A position to the left or right of an object, place, or central point.

‘a town on the other side of the river’
‘on either side of the entrance was a garden’

1.1 Either of the two halves of an object, surface, or place regarded as divided by an imaginary central line.

‘she lay on her side of the bed’


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