On a road map Croatia looks like one coast. In the 2026 coastal register it is five separate gateway networks: Rijeka with 9 state routes, Zadar 15, Šibenik 4, Split 17 and Dubrovnik 5. Islands connect to their mainland gateway, rarely to each other.
What a map of Croatia leaves out
Every general map of the country draws the same three things: the motorway inland, the coast road, and a scatter of islands offshore. None of them tells you the one thing that decides a Croatian itinerary, which is that the islands are joined to the mainland by a scheduled network with a published shape — and that the shape is nothing like the geography.
The 2026 state coastal line register lists 68 routes. 51 of them are state lines grouped into five mainland gateway regions plus one outlier; the remaining 17 are commercial services with no public service obligation. Read the register rather than the coastline and the country resolves into five clusters that barely touch.
| Gateway group | State routes | Of those, car ferries | What hangs off it |
|---|---|---|---|
| Rijeka and Kvarner | 9 | 5 | Krk, Cres, Lošinj, Rab, northern Pag and the Lošinj archipelago |
| Zadar | 15 | 6 | Ugljan, Pašman, Dugi otok, Silba, Olib, Molat, Iž and Rava |
| Šibenik | 4 | 1 | Zlarin, Prvić, Kaprije, Žirje and Krapanj |
| Split and central Dalmatia | 17 | 10 | Brač, Šolta, Hvar, Vis, Korčula, Lastovo and the Pelješac crossings |
| Dubrovnik and the far south | 5 | 2 | Koločep, Lopud, Šipan and Mljet |
| Pula to Zadar (line 9141) | 1 | 0 | The only register entry linking Istria to the rest of the coast |
Two things fall out of that table immediately. The first is that Split and Zadar between them hold 32 of the 51 state routes, so the middle of the coast carries most of the network. The second is that Šibenik, a city most itineraries pass through, has 4 routes and one car ferry. Two ports two hours apart differ by a factor of four in what they can put you on.
1,244
registered island units — 78 true islands, 524 islets and 642 reefs, of which 52 are permanently inhabited
That is the other half of the map problem. The Registar otoka counts 1,244 units, and 52 of them have permanent residents — 127,838 people at the 2021 census across 355 settlements. A map that draws every rock at the same weight as Hvar is drawing something that has no bearing on a trip. The scheduled network is a much better guide to which islands exist in any useful sense: it serves the inhabited ones, because that is what the public service obligation is for.
Islands connect to their gateway, not to each other
This is the structural fact that maps hide and itineraries founder on. The register is built almost entirely of radial routes: island to mainland and back again. Very few entries run island to island without passing a gateway, and the ones that do are the through-boats down the Dalmatian chain.
The practical effect is that two islands can be within sight of each other and take a day to travel between, because the scheduled way from one to the other is back to the mainland and out again. On a road map that looks absurd. On the register it is simply what the network was built to do, which is move islanders to their county town.
Which gateway you are starting from
How you are travelling
The bridged island at that end →
Switch that between the two travel modes at Split and the map halves and then some: 17 state routes on foot, 10 with a vehicle. At Šibenik it drops from 4 to 1. Every vehicle-carrying route in the country is a car ferry and every fast craft is closed to cars, so the decision to hire one is a decision about which map you are reading.
Planning a coastal trip across gateway groups
The itinerary that fails is the one built on distance. Two islands in different gateway groups — say something in the Zadar archipelago and something off Split — look like a short hop on the map and are not connected in the register at all. The scheduled answer is back to the mainland, along the coast road, and out again from the next gateway.
The cost is a whole day, and it is usually a day that had a booking at the far end of it. The fix is to plan within one gateway group per leg and to treat every change of group as a road day rather than a boat day. The island-hopping routes that do work run along the Dalmatian chain, and they are the exception rather than the pattern.
Set against that, the ageing figures in the island register explain why the network looks the way it does. 29.03 % of islanders are 65 or over against 22.45 % nationally, and population density on the islands runs 37.4 per km² against 68.4 for the country. The state buys sea capacity to keep small, old, thinly settled communities connected to a hospital and a county office. Tourist convenience is a by-product, which is exactly why the routes go where they go.
So the useful map of Croatia is a list of gateways with things hanging off them. Pick the gateway first, then the islands under it, then the dates — and treat the register rather than the coastline as the thing that says what is next to what.
What do you need to work out next?
The network has a shape. These are the next decisions.
Where to stay
Which gateway should the trip be based on?
Split holds 17 state routes; Šibenik holds 4.
Getting around
Does a car actually open more of this map?
Every one of the 33 catamarans in the register is foot-passenger only.
When to go
When does the network shrink?
The 17 commercial lines run to summer demand and stop with it.
Planning
Where does Croatia actually sit in Europe?
Croatia entered both the euro and Schengen on 1 January 2023.
Ferry data: Agencija za obalni linijski pomorski promet (ZOLPP), 2026 state coastal line register and per-line timetables. Island counts: Registar otoka, Republic of Croatia.
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Thank you for your nice words!