zhè shì qù mùdìdì de lùxiàn.

The sentence follows a very common Mandarin pattern:

这 + 是 + noun phrase

So here it is:

• 这 = this
• 是 = to be / is
• 去目的地的路线 = the route to the destination

So the whole sentence means:

This is the route to the destination.

A more literal breakdown is:

• 这 = this
• 是 = is
• 去目的地的 = for going to the destination
• 路线 = route

So literally it is something like:

This is the route for going to the destination.

是 is the Mandarin verb to be, and it is used here to link this and the route:

• 这是... = This is...

This is one of the most basic sentence patterns in Chinese.

Examples:

• 这是我的书。 = This is my book.
• 这是地图。 = This is a map.
• 这是去目的地的路线。 = This is the route to the destination.

So in this sentence, 是 works very much like is in English.

In this sentence, 这 is being used by itself as a pronoun meaning this.

• 这 = this
• 这个 = this one / this + classifier

Both can appear in Mandarin, but they are used differently.

In your sentence:

• 这是去目的地的路线。
• Literally: This is the route to the destination.

Here, 这 stands alone as this, so 这 is correct.

If you wanted to say:

• This route is the route to the destination or
• This is the route you might say:
• 这条路线是去目的地的路线。

Here 这条路线 means this route, with 条 as the classifier for long things like roads, rivers, and routes.

So:

• 这 = this
• 这个 = this one / this thing
• 这条路线 = this route

去目的地 literally means go to the destination.

Breakdown:

• 去 = to go
• 目的地 = destination

So:

• 去目的地 = go to the destination

But in this sentence, it is not acting as a complete action sentence by itself. Instead, it is part of a modifier:

• 去目的地的路线 = the route for going to the destination

So 去目的地 describes what kind of route it is.

Here 的 links a modifying phrase to a noun.

Pattern:

[modifier] + 的 + noun

In your sentence:

• 去目的地 = go to the destination
• 的
• 路线 = route

So:

• 去目的地的路线 = the route for going to the destination
• more natural English: the route to the destination

This use of 的 is extremely common in Chinese.

Examples:

• 去学校的车 = the vehicle going to school
• 回家的路 = the road home
• 去北京的飞机 = the plane to Beijing

So here, 的 does not mean possession only. It often just connects a descriptive phrase to a noun.

Normally, no.

You usually need 的 here because 去目的地 is a phrase modifying 路线.

So the natural form is:

• 去目的地的路线

Without 的, it sounds incomplete or unnatural in standard Mandarin.

A good rule for learners is:

If a verb phrase describes a noun, you will usually need 的.

So:

• 去目的地的路线 = correct
• 去目的地路线 = generally not natural

目的地 means destination.

It is made of:

• 目的 = purpose / goal / target
• 地 = place

So together:

• 目的地 = destination
• literally: goal-place

Why is the pinyin mùdìdì?

Because both of these characters are pronounced dì here:

• 目 = mù
• 的 = dì in this word
• 地 = dì

This is important because the second character here is 的, but it is not the usual grammar particle de.

Compare:

• 目的地 = mùdìdì = destination
  Here 的 is pronounced dì because it is part of the word.
• 我的书 = wǒ de shū = my book
  Here 的 is the grammar particle, pronounced de.

This is a very common point of confusion for beginners.

They are the same character, but they are not the same word or function here.

In this sentence there are two 的 characters:

1. 目 的 地

   • Here 的 is part of the vocabulary word 目的地
   • It is pronounced dì
   • It means part of the word destination

2. 去目的地 的 路线

   • Here 的 is the grammar particle
   • It is pronounced lightly as de
   • It links the phrase 去目的地 to 路线

So even though the character is written the same way, the pronunciation and function are different.

路线 means route.

• 路 = road, path, way
• 路线 = route, itinerary, line of travel

In many situations, 路线 is a little more specific and planned than 路.

Examples:

• 路 can mean a road or way in general.
• 路线 often means a particular route someone should follow.

So in this sentence:

• 路线 is a good choice because we are talking about a specific route to reach a destination.

If you said 去目的地的路, that can also be understandable and natural in some contexts, but 路线 sounds a bit more like the route on a map, in directions, or in transportation.

Yes, you often can.

Both are understandable:

• 去目的地的路线 = the route for going to the destination
• 到目的地的路线 = the route to the destination / the route that reaches the destination

Subtle difference:

• 去 focuses on the action go
• 到 focuses a bit more on arriving at / reaching

In many practical contexts, both are fine.
Depending on the situation, some speakers may find 到目的地的路线 or 前往目的地的路线 a little more formal or map-like.

But 去目的地的路线 is perfectly understandable and natural for a learner to know.

Yes, it is natural and understandable, especially in explanations, maps, navigation, or instructions.

That said, native speakers might also say similar things such as:

• 这是去目的地的路线。
• 这是到目的地的路线。
• 这是前往目的地的路线。
• 这是去那里的路线。 = This is the route to get there.

The exact choice depends on context and style.

More casual speech

If everyone already knows what place you mean, a speaker might say:

• 这是去那儿的路线。
• 这是路线。
• 走这条路就能到。 = Take this road and you can get there.

So your sentence is grammatically correct and useful, even if everyday speech may sometimes use simpler wording.

Because 路线 is not directly following 这 as a noun phrase like this route.

Your sentence is:

• 这 是 去目的地的路线。
• This is the route to the destination.

Here, 这 is a pronoun meaning this, and then 是 introduces what it is.

If you wanted to say this route, then you would usually need a classifier:

• 这条路线 = this route

Why 条? Because 条 is a common classifier for long, narrow things or things conceptualized as lines, such as:

• roads
• rivers
• pants
• routes

So compare:

• 这是去目的地的路线。 = This is the route to the destination.
• 这条路线是去目的地的。 = This route is the one to the destination.

Here it is pronounced zhè.

That is the normal pronunciation when 这 stands by itself:

• 这 是... = zhè shì...

When 这 comes before a classifier, it is often pronounced zhèi in modern speech:

• 这本书 = often zhèi běn shū
• 这个人 = often zhèi ge rén

But in your sentence, since 这 stands alone, zhè is the expected pronunciation.

Not very naturally.

A literal translation would be something like:

This is go-destination-’s route.

That sounds awkward in English, so a better literal gloss is:

This is the route for going to the destination.

And the natural English translation is:

This is the route to the destination.

This is a good example of why Chinese learners should understand the structure, not just translate word by word.

The key grammar point is this pattern:

[verb phrase / descriptive phrase] + 的 + noun

In your sentence:

• 去目的地 = go to the destination
• 的
• 路线 = route

So:

• 去目的地的路线 = the route for going to the destination

This structure is used constantly in Mandarin.

More examples:

• 去学校的公交车 = the bus to school
• 回家的路 = the way home
• 卖水果的人 = the person who sells fruit
• 我昨天买的书 = the book I bought yesterday

If you understand this modifier + 的 + noun pattern, you will be able to understand a huge number of Chinese sentences.