Mljet Off-Season Without a Car: Buses, Boats and Walking

Getting to Mljet without a car

The island has two ferry gateways. Jadrolinija's car ferry runs from Prapratno on the Pelješac peninsula to Sobra, roughly 45 minutes across the Mljet Channel and the shortest crossing. Foot passengers pay on board and walk off at Sobra, from where the island bus meets sailings. The faster option is the catamaran from Dubrovnik's Gruž harbour to Sobra, about 90 minutes, or the seasonal line to Polače and Pomena on the western end. In April, May, late September and October, check timetables the week you travel: services thin out sharply outside July and August.

From Split, the realistic route is a bus or rental car down the coast to Prapratno near Ston, then the ferry. Allow three hours for Split–Prapratno by road in low season. Dubrovnik is easier: a 50-minute drive to Prapratno, or the catamaran direct. If you fly into Dubrovnik, spend the first or last night near Gruž so an early sailing does not mean a dawn taxi. Spring and early autumn are the sweet spot — the maquis is green, the lakes are quiet, and guesthouses in Sobra, Polače and Pomena still open.

The Sobra bus and island roads

Mljet's public bus links Sobra with the interior villages and the western end, timed around ferry arrivals. The run from Sobra to Pomena takes around 45 minutes to an hour along the island's one main road, climbing past Babino Polje, the island's largest settlement, and turning off near Goveđari for the national park entrances at Pomena and Polače. It is a working service, not a tour bus: limited luggage space, no reservations, and a reduced off-season schedule. Confirm at your accommodation which sailings the bus currently meets, because a missed connection means a long wait.

Taxis exist but are few and expensive per kilometre; I would not build a car-free plan around them. Cycling is the better fallback, and rental outfits in Pomena and Polače hire mountain bikes in season — the road to the lakes is short but the gradients surprise people. Note that the national park charges an entrance fee covering the lakes area, and that off-season opening hours at the park's information points and the small shops in Pomena shrink. Buy groceries in Sobra or Babino Polje rather than relying on the western villages.

Walking the lakes and the coast

The headline walk is the circuit of Veliko and Malo Jezero, the two saltwater lakes inside Mljet National Park. A path rings Veliko Jezero, with the Benedictine monastery on the islet of Sveta Marija reachable by a small shuttle boat that runs in season. The full loop, starting from either Pomena or Polače, is gentle — a few hours at an unhurried pace — and mostly shaded by Aleppo pine and holm oak. In May the wildflowers along the path are the reason to come; in October the water is still swimmable and the path is nearly empty.

Beyond the lakes, the marked trail from Polače toward Odysseus' Cave on the south coast is rougher and takes half a day return; wear proper shoes. Montokuc, the viewpoint above the lakes, is a short but steep climb rewarded with the whole western end in view. Walking between Pomena and Polače takes about 20 minutes on an easy path, which matters if you are staying in one and eating in the other. I would book a small guesthouse in Pomena for the park access, then move to Sobra or Babino Polje for the return ferry.