ie wo deruno ga girigiri datta node, eki made hasirimasita.

A natural breakdown is:

• 家を出る = to leave home
• の = turns leave home into leaving home
• が = marks leaving home as the thing being described
• ぎりぎりだった = was just barely in time / was at the last possible moment
• ので = because / since
• 駅まで = to the station / as far as the station
• 走りました = ran

So the structure is roughly:

Because leaving home was at the very last minute, I ran to the station.

A very natural English translation is something like I left home at the last minute, so I ran to the station.

This is a very common question.

With verbs of movement like 出る, を can mark the place that someone leaves or passes through.

So:

• 家を出る = leave home
• 部屋を出る = leave the room
• バスを降りる = get off the bus

Here, を does not mean a direct object in the English sense. It marks the place being exited.

You can sometimes see から with 出る, but the nuance is a little different:

• 家を出る = leave home
• 家から出る = go out from the house

In this sentence, 家を出る is the most natural and standard way to say leave home.

The の is nominalizing the verb phrase.

That means it turns 家を出る from to leave home into something like leaving home.

So:

• 家を出る = leave home
• 家を出るの = leaving home

This lets the whole action become the subject of the next part:

• 家を出るのがぎりぎりだった
• Leaving home was last-minute

You can think of の here as similar to English -ing in some cases.

Both can appear in similar sentences, but the nuance changes a little.

• 家を出るのがぎりぎりだった focuses on the thing that was last-minute
• 家を出るのはぎりぎりだった sounds more like as for leaving home, it was last-minute

In this sentence, が is marking 家を出るの as the thing being described by ぎりぎりだった.

So のが is very natural here.

Using は is not impossible, but it can sound a bit more contrastive or topic-based.

ぎりぎり means just barely, right at the limit, or at the last possible moment.

In this sentence, it means the speaker left home with almost no extra time.

So the nuance is:

• they were cutting it very close
• they left at the last minute
• there was almost no margin left

It does not mean they literally missed the deadline. It means they were very close to being late.

Because ぎりぎり does not behave like a regular -i adjective.

It acts more like a noun-like or na-adjective-like expression, so when you say was, you use the copula:

• ぎりぎりだ = is just barely in time / is right at the limit
• ぎりぎりだった = was just barely in time / was right at the limit

So ぎりぎりかった would be wrong.

This is normal Japanese sentence structure.

In Japanese, subordinate clauses such as those before ので, から, けど, とき, and so on often use plain forms, even when the main sentence is polite.

So:

• ぎりぎりだったので、走りました

is completely natural.

The politeness is mainly shown in the main clause, here 走りました.

You can say ぎりぎりでしたので in very formal speech, but だったので is very common and natural.

ので means because or since.

In many situations, ので and から can both translate as because, but the nuance is slightly different:

• ので = softer, more explanatory, more neutral
• から = more direct, more assertive, sometimes more personal

So:

• 家を出るのがぎりぎりだったので、駅まで走りました
• Because I left home at the last minute, I ran to the station

This sounds like a calm explanation.

If you used から, it would still be understandable, but slightly more direct:

• 家を出るのがぎりぎりだったから、駅まで走りました

まで marks the endpoint: as far as the station or simply to the station.

So:

• 駅まで走りました = ran to the station

This is very natural because the sentence is emphasizing the destination as the limit of the running.

Compare:

• 駅まで走る = run to the station
• 駅へ走る = run toward the station

駅に走る is much less natural here. With 走る, まで or へ is usually a better choice when talking about direction or destination.

The subject is omitted because Japanese often leaves out information that is clear from context.

In this sentence, the understood subject is probably I:

• I left home at the last minute, so I ran to the station.

But Japanese does not need to say 私 unless it is necessary for clarity or emphasis.

Depending on context, it could technically be someone else, but without extra context, most learners should read it as I.

This is a subtle but good question.

• 家を出るのがぎりぎりだった sounds like the act/timing of leaving home was at the last possible moment
• 家を出たのがぎりぎりだった would focus more on the actual completed moment when I left home

In this sentence, 出るの sounds very natural because the speaker is talking about the timing of the action in a general event-like way.

Also, the past meaning is already shown by だった, so Japanese does not always need 出た here.

Both forms can be possible in some contexts, but 出るのがぎりぎりだった is a very natural way to say leaving home was really last-minute.