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Day trip · The Krk Map
Postojna Cave and Predjama (Slovenia): the journey stop
Not a day trip: a stop on the drive in or out, right on the route from Ljubljana.
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Postojna is big and commercial, one of Europe's largest show caves, but the underground train makes it easy with children, and it sits almost exactly on the fastest road from Ljubljana to Krk. As a stop it costs about ten minutes of extra driving plus the visit. As a day trip it costs four and a half hours in the car. Couples who prefer drama to trains should choose Škocjan instead.
When to come: All year, all weathers
What to do
Break the Ljubljana-Krk drive at Postojna, don't make it a day trip
For guests driving from Austria or Germany via Ljubljana, the fastest route to Vrbnik already leaves the A1 motorway at Postojna and follows road 6 via Ilirska Bistrica to the Croatian border. Stopping at the cave adds only about 10 minutes of driving.
- Where
- Postojna Cave Park
- When
- Arrival or departure day; the first tours of the morning are the quietest.
- Time
- About 1.5 h for the cave; 3–4 h with Predjama
- How
- Ljubljana to Vrbnik takes about 2 h 37 min direct, or 2 h 48 min via the cave. As a day trip it is about 2 h 10 min each way from Vrbnik, or 2 h 20 min from Stara Baška.
Postojna Cave: the underground train and 1.5 km on foot
One of Europe's largest show caves: 3.5 km by train and 1.5 km guided on foot, about 90 minutes, at about 10 °C.
- Where
- Postojna
- When
- Tours roughly hourly 09:00–18:00 from April to October, most frequent in July and August
- Time
- About 1.5 h
- How
- Buy online (EUR 34.90 in 2026). Arrive 30 min before; the train boards 15 min before the tour.
Tip: Bring a jacket for everyone, even in August.
Predjama Castle, built into the cliff
A castle set into a cliff face, about 9 km from the cave.
- Where
- Predjama
- When
- Morning. Jun–Aug 09:00–19:00
- Time
- 1 h
- How
- Cave and castle combined ticket EUR 49.90 online (2026). 14 min by car from the cave.
Tip: If you arrive from the north in the morning, do the castle first, then the cave, then drive on to Krk.
For adults: Škocjan Caves instead
A UNESCO-listed cave walked entirely on foot, with no train; 12 °C.
- Where
- Matavun, near Divača
- When
- Book a timed tour online in summer; arrive 30 min early
- Time
- 2–3 h, with about 1,000 steps (a shorter exit is possible)
- How
- A Ljubljana-Vrbnik drive via Škocjan takes about 2 h 53 min instead of 2 h 37 min.
Tip: Choose Škocjan for couples who want drama and fewer crowds; Postojna for children (the train).
A half day here
- On arrival day from the north: Predjama at 09:00–10:00, Postojna Cave around 11:00, lunch, then about 2 h on to Krk.
Practical
Border
Carry ID or a passport. Slovenia ended its temporary checks at the Croatian border in June 2026, but police can still stop cars for spot checks.
Watch out
- Large, busy, commercial; book online.
- 10–12 °C in the caves: jackets.
- On a summer Saturday arrival, expect traffic at the Krk bridge.
Curated by Benjamin Haller and our guests · Facts checked 31 Oct 2026 · How this map is made
The Krk Map is made by Marim Luxury Villas, a family company that hosts guests in Stara Baška and Vrbnik. No place pays to be on it; partners and our curators’ own offers are marked. Our villas