Kuda vodi ova staza kad padne mrak?

Kuda is used for movement, direction, or route: which way, where to, along what path.

By contrast, gdje means where in the sense of location, not motion.

• Gdje je staza? = Where is the path?
• Kuda vodi staza? = Where does the path lead? / Which way does the path go?

So in this sentence, the idea is not the path’s location, but the direction or destination it leads toward.

Both can relate to movement, but they are not exactly the same.

• kamo focuses more on the destination
• kuda focuses more on the route, direction, or way through

So:

• Kamo vodi ova staza? = Where does this path lead? (destination-oriented)
• Kuda vodi ova staza? = Which way does this path lead? / Where does this path go? (route-oriented)

In real usage, the distinction is sometimes blurred, but kuda is very natural with something like a path, road, or trail.

Yes. Voditi literally means to lead.

Here, ova staza vodi means this path leads. That is a very common way to talk about roads, trails, doors, stairs, and so on.

Examples:

• Ova cesta vodi do sela. = This road leads to the village.
• Stepenice vode gore. = The stairs lead upstairs.

English often uses go in similar situations, but Croatian commonly uses voditi.

Ova staza is in the nominative singular feminine, because it is the subject of the sentence.

• staza = trail, path
• ova = this (feminine singular nominative)

They match in gender, number, and case:

• ovaj for masculine nouns
• ova for feminine nouns
• ovo for neuter nouns

Since staza is feminine, the correct form is ova.

This is mainly about aspect.

• padne is from the perfective verb pasti
• pada is from the imperfective verb padati

In time clauses with kad referring to a future or repeated situation, Croatian often uses the perfective present to express the moment when something happens:

• kad padne mrak = when darkness falls / when it gets dark

This sounds natural because it refers to the point at which darkness arrives.

Kad pada mrak is possible in some contexts, but it usually suggests a more ongoing process, like while it is getting dark or as darkness is falling, which is not the main idea here.

Mrak means darkness or dark.

In the expression padne mrak, Croatian uses an idiom that corresponds closely to English darkness falls or night falls.

So kad padne mrak is a fixed, natural expression meaning:

• when it gets dark
• when night falls
• when darkness falls

You do not need an article, because Croatian has no articles like the or a.

Yes. Kad and kada both mean when.

• kad is shorter and very common in everyday speech
• kada can sound a bit fuller or slightly more formal, depending on context

In this sentence, both are correct:

• Kuda vodi ova staza kad padne mrak?
• Kuda vodi ova staza kada padne mrak?

The shorter kad is completely natural.

Yes, Croatian word order is fairly flexible, although some orders sound more natural than others depending on emphasis.

The original:

• Kuda vodi ova staza kad padne mrak?

Possible variations:

• Kuda ova staza vodi kad padne mrak?
• Kad padne mrak, kuda vodi ova staza?

These all make sense, but the original is the most neutral and natural.

Changing word order usually changes focus or emphasis, not the core meaning.

Yes. It is a time clause introduced by kad.

Main clause:

• Kuda vodi ova staza?

Subordinate time clause:

• kad padne mrak

Together:

• Kuda vodi ova staza kad padne mrak?

So the sentence structure is basically:

• Where does this path lead
  • when it gets dark?

Yes, but the nouns are not identical.

• staza = path, trail, footpath
• put = road, way, route, journey; a broader word
• cesta = road
• stazica = little path

Staza suggests a smaller, narrower path, often one for walking. So it fits well in a sentence like this, especially if you imagine a trail in nature or a narrow path.

A natural answer would usually use vodi again, often with do plus the genitive:

• Vodi do sela. = It leads to the village.
• Vodi do rijeke. = It leads to the river.
• Vodi u šumu. = It leads into the forest.
• Ne znam kamo vodi. = I don’t know where it leads.

So this sentence is a very normal kind of question if someone is asking about the destination of a path or trail.