Walk

TakaIs it possible to replace 'toward' above with 'for' as this below, without changing the meaning?

No. It changes its meaning, without doubt.

We walked two kilometers toward the hotel.

This means you just walked in the direction of the hotel, the hotel

But this replacement would work, wouldn't it?

He headed toward the bathroom?He headed for the bathroom.

'For' could indicate a destination, meaning 'in the direction of', couldn't it?

CliveI would just say it's not idiomatic.

Hmm....
Is it not that for can be used to indicate a (place mentioned) as a destination?
Though your thought struck me later on, I didn't want to edit the post as I felt that the sentence did convey the right idea, the hotel being portrayed as a destination. Your meaning on behalf of can be easil

prajwalkrWe walked two kilometers for the hotel.This means you walked 2 kilometers to reach that hotel and the hotel is your desired destination. You might want to meet someone there or get into it and have food or whatever.

I agree with Clive. " For" in this context has the meaning of "on behalf", similar to this example: She went to the bank to

He headed for the bathroom..

The verbs head and walk are used differently.

He walked to the hotel for a drink at the bar. (destination, not direction)
At the hotel, he drank a lot of beer.
After two hours, he headed for the nearest bathroom (WC).

Head for is almost an idiom - certainly he is not just walking in that general dire