Prop-word "one"

Hello.
I have a question about the word "one".
In the example: You take the long route, and I'll take the short. I have to use "one" after short or it is possible to leave it out. If it is, which version is more common?

Hope you will help me.
Regards

It is not necessary to use 'one'.

But in this example, I suppose, it is impossible to omit "one".
This glass is dirty. Can I have a clean, please?

Little man said:

But in this example, I suppose, it is impossible to omit "one".
This glass is dirty. Can I have a clean, please?

Click to expand...

No, it is not possible.

Little man said:

I have a question about the word "one".
In the example: You take the long route, and I'll take the short. I have to use "one" after short or it is possible to leave it out. If it is, which version is more common?

Click to expand...

I find it much more natural with "one".

A (relatively well-known) lyric from the Scottish traditional song The Bonnie Banks of Loch Lomond is "You take the high road and I'll take the low road". It uses what I consider to be the most natural construction - the repetition of the word "road". However, omitting the second "road" still results in a grammatically correct sentence. The same goes for your original.