Bosnia and Montenegro Road Trip: 6-7 Day Loop

One rental car, one week, and a loop that pairs the best of two countries: the Ottoman towns and green rivers of Bosnia and Herzegovina, then Montenegro’s coast and its wildest mountains, joined into a single ring you can drive at a gentle pace. The full circle out of Sarajevo runs roughly 730 km over six or seven days, and only two of those days involve any real distance behind the wheel. Sarajevo, Mostar, Trebinje, Kotor, Durmitor and Sutjeska, then home.

The one thing that will make or break the trip isn’t the sights but the paperwork: you cross an international border twice, in and out of Montenegro, so the car needs a Green Card that names Montenegro before you leave the pickup desk. Get that right and the rest is scenery. If you’re still deciding whether to split your time between the two countries at all, our Bosnia versus Montenegro comparison weighs coast against mountains; if you would rather not drive it and just link the two capitals by bus, the Sarajevo to Kotor leg covers that on its own. Come in May, June or September for warm days and swimmable rivers without the July heat, though the high trails at Durmitor and Sutjeska really want full summer.

The shape of the loop

The nights fall like this: one in Sarajevo, one in Mostar, one in Trebinje, one in Kotor, one at Žabljak for Durmitor, and one near Foča for Sutjeska, before the short run home on day seven. That’s the comfortable seven-day version. Drop a night and you have a tight six-day loop; there’s a note at the end on where to cut.

Two of the six legs are long mountain drives, and it helps to know which. The Kotor to Žabljak climb and the Žabljak to Sutjeska crossing are the ones that eat half a day each; the rest are short hops of two hours or less, most of them scenic enough that the driving is part of the point. Front-load the towns where you walk, then let the second half open out into lakes, canyons and forest.

Day 1: Sarajevo

Give the capital a full day on foot before you touch a car. Sarajevo reads like a timeline you can walk: step off the Ottoman bazaar of Baščaršija, cross the brass line set into the pavement, and you’re on a Habsburg boulevard, with the scars of the 1990s siege still legible through all of it. Do the old town slowly - the Sebilj fountain, the coppersmiths, the Gazi Husrev-beg Mosque of 1531, and the Latin Bridge where the shot that started the First World War was fired in 1914. If you have the time, the cable car up Mount Trebević and the Tunnel of Hope museum by the airport round out the story.

Pick up the hire car on the morning you leave, not before - a car sitting idle while you explore on foot is money wasted, and the bazaar quarter is tight for parking. This is also the moment to confirm the cross-border cover in writing; more on that below, but don’t drive off without it.

Day 2: over the Neretva to Mostar

The drive south is one of the best in the Balkans, so don’t rush it. It’s about 130 km and 2 to 2.5 hours of actual driving down the M17 through the Neretva canyon, but you’ll want to stop, so give it the day. After the short motorway out of Sarajevo you drop onto the two-lane M17 and follow the river; the road is good but you share it with trucks, so tuck in behind the slow ones and watch the gorge instead of fighting to pass. Break at Konjic, roughly halfway, for its restored Ottoman stone bridge.

Roll into Mostar in the late afternoon and you’ll have timed it right, because the town is at its best once the day-trip coaches leave. Everything orbits Stari Most, the single-arch Ottoman bridge shelled to rubble in 1993 and rebuilt stone by stone in 2004; cross it slowly, lose an hour in the coppersmiths’ bazaar, and climb the Koski Mehmed-Paša minaret for the view down the river. Eat two or three streets back from the bridge, where the view premium drops away, and our Mostar guide has the honest detail, including the town’s still-visible wartime divide.

Day 3: Mostar to Trebinje, the wine town

A short, pretty leg: about 115 km and just over two hours via Stolac, where it is worth pausing at the Radimlja necropolis and its field of medieval carved tombstones. Somewhere past Stolac you cross into Republika Srpska, the Serb-majority half of the country - no passport check, same currency, but the signage switches to Cyrillic.

Trebinje is the quiet surprise of the south: a walled 18th-century Ottoman old town wrapped around a plane-tree square, in the middle of Herzegovina’s wine country. Its landmark is the Arslanagić Bridge, an Ottoman bridge traditionally dated to 1574 (some sources place its construction in the 17th century) that was taken apart stone by numbered stone when the river was dammed in the 1960s and rebuilt downstream, in the Gradina district of town. Out of town, the Tvrdoš Monastery makes its own wine; a tasting of the native Vranac red or Žilavka white is the right way to end the day. Stay the night - once the day-trippers from Dubrovnik leave, the square is one of the most relaxed evening spots on the whole loop, and the full detail is in our Trebinje guide.

Day 4: across the border to Kotor

This is the first international crossing, and it’s a gentle one. From Trebinje you drop to the coast at the Zupci (Bosnian side) / Sitnica (Montenegrin side) border post - since spring 2025 a joint, one-stop crossing that has cut the old queues - then round the western arm of the Bay of Kotor through Herceg Novi. Reckon on about 90 km and 2 to 2.5 hours including the border and the slow, gorgeous bay road; if the far shore is busy, the Kamenari to Lepetane ferry shortcuts across the narrows for a small fare (confirm the current rate at the ramp). Note the currency switch here: Bosnia runs on the convertible mark, Montenegro uses the euro, so keep a little of each.

Kotor itself is a walled medieval old town crammed against a near-vertical mountain, with fortifications that zigzag up the slope to St John’s Fortress - the climb is the classic thing to do at dawn before it heats up. It’s a UNESCO-listed maze of stone lanes and small squares, best walked in the evening once the cruise crowds have sailed. Our sister site’s guide to Kotor on Montenegro Guidebook covers the old town and the fortress walk in full. Sleep inside the walls for the atmosphere, or in quieter Dobrota or Muo along the bay if you want easy parking.

Day 5: up into the mountains, Durmitor and Žabljak

Today the car earns its keep. Kotor to Žabljak is about 165 km and 3.5 to 4 hours on serious mountain roads, north through Nikšić and up onto the plateau, with the final 45 minutes climbing to the town. This is a driving day where the road is the reward: hairpins, high pasture and, if you want to add an hour, the switchback climb out of Kotor on the old Serpentine road gives one of the great views in Europe back over the bay.

Žabljak is a plain little mountain town, the highest in the Balkans at around 1,450 m, and it exists mainly as the base for Durmitor National Park. The easy highlight is the Black Lake (Crno jezero), a glacial lake about 3 km from town ringed by pine and framed by the grey Durmitor peaks - an hour’s flat walk loops it. With more time, the Durmitor Ring road and the famous Đurđevića Tara Bridge - a graceful 1940s arch high over the Tara canyon, about 25 km northeast of town on the road toward Mojkovac - fill a full day. Our sister site’s Durmitor National Park guide has the walks and the practicalities.

Day 6: the Piva canyon and back into Bosnia at Sutjeska

The second crossing is the wild one. From Žabljak you drive west to Plužine and along the turquoise Piva Lake and canyon - a spectacular stretch of tunnels blasted through the cliffs above the water - to the Šćepan Polje (Montenegrin side) / Hum (Bosnian side) border, the small crossing by the rafting camps where the Tara and Piva meet. It’s roughly 125 km and about three hours with the border, then a further half hour up to Foča and into the park. This is a quiet, remote frontier; carry your documents handy and don’t expect much in the way of facilities.

Just past Foča you reach Sutjeska National Park, Bosnia’s oldest, established in 1962. Its three headline sights are heavyweight: the vast, strange Tjentište war memorial to the 1943 battle, two great concrete wings on the hillside; Perućica, one of the last two primeval forests left in Europe, entered only with a park guide; and Maglić, at over 2,386 m the highest mountain in the country, straddling the border you just crossed. Sleep near Tjentište or Foča. Our full Sutjeska National Park and Maglić guide lays out the trails, the guide arrangements and the season - the high walks are a summer proposition and snow lingers near Maglić into early summer.

Day 7: Sutjeska to Sarajevo, closing the ring

The last day is a short one: Foča to Sarajevo is about 107 km and two hours on the M18 through the Drina and Bistrica valleys, a mellow drive back into the capital. If your flight is out of Sarajevo, time your arrival to drop the car; if you’ve hours to spare, the road passes close to Trnovo and the Bjelašnica olympic uplands for a last stretch of legs before the airport.

Renting the car and the Green Card

A hire car is the backbone of this loop - it turns a scattered set of border towns, coast and mountains into one flowing circle, and public transport simply doesn’t stitch Durmitor and Sutjeska together. Book it in Sarajevo for pickup the morning you leave, and settle the cross-border question before you sign:

• Montenegro needs a Green Card. Croatia, Bosnia and Serbia sit inside the Green Card zone and need no extra document, but Montenegro is outside the EU and requires Green Card cover for foreign-registered cars. A card printed only for Bosnia doesn’t automatically cover Montenegro, so it must be listed by name.
• Ask at booking, not at the border. Tell the rental company you’re crossing into Montenegro and back; for a rental you don’t buy the Green Card separately - it’s bundled into a cross-border fee that shows up before you pay, and the agency hands you the document. Some agencies also restrict certain cars from leaving the country, so confirm your specific car is allowed out.
• Money. Bosnia uses the convertible mark (BAM / KM), pegged at about 1.96 to the euro; Montenegro uses the euro. Small gates, cafés and the rafting camps want cash in the local currency, and card acceptance thins out in the mountains, so carry some of each.
• The roads. Outside short motorway sections you’re on two-lane roads shared with trucks - good surfaces, modest average speeds, and mountain hairpins on the Kotor and Piva legs. Watch for police speed traps, especially in Republika Srpska and on the Montenegrin main roads.

The full booking detail, winter tyres and cross-border rules are in our Bosnia car rental guide, and if you’re approaching from the coast instead, our guide to taking a rental from Croatia into Bosnia covers the same Green Card mechanics from the Croatian end.

Six days or seven?

Seven days with six nights is the relaxed shape, and it gives every stop a proper evening. To cut it to six days, the cleanest trim is to drop the Trebinje overnight and treat the town as a long lunch and wine stop on the way from Mostar to Kotor - you lose a lovely evening but keep the driving sane. Don’t compress the two big mountain legs to save a day: the Kotor to Žabljak climb and the Piva crossing are three to four hours each of real driving, and stacking them makes for a grim day. If anything, the trip rewards an eighth day - a second night at Kotor or Žabljak lets you actually walk the fortress or hike above the Black Lake rather than just drive to them.

A loop like this gives you the two countries in one clean circle: a canyon drive, an Ottoman bridge town, a wine square, the Bay of Kotor, a glacial lake under the Durmitor peaks, and a primeval forest on the way home. Keep cash in both currencies, get Montenegro written onto the Green Card, and take the mountain roads at their own gentle pace - there’s a fair chance the wild Piva crossing ends up the part you talk about most.