What the park actually protects
Una National Park was established in 2008 and covers roughly 200 square kilometres of the upper Una river valley around Bihać, along with stretches of its tributaries, the forested hills either side, and a scatter of villages that sit inside the boundary rather than outside it. The name gets used loosely to mean three different things, and it is worth separating them before planning anything.
The park itself is the whole protected river system: the main channel of the Una from north of Bihać down to the Croatian border, side rivers such as the Unac and the Krka (a different Krka from the one in Croatia), a network of hiking and cycling tracks, and the villages and rafting bases strung along the water. Štrbački buk is one specific waterfall inside the park, a wide, stepped cascade about 24 metres high and the single most photographed spot on the river; it has its own page because most visitors go there specifically, not to “the park” in the abstract.
Martin Brod is a village further downstream, at the confluence with the Unac, with its own set of smaller cascades and a different, quieter feel; it also has its own page for the same reason. This page is about the park as a whole: how to get in, what there is to do beyond those two spots, where to base yourself, and what it costs.
Where it sits, and why that changes your plan
Bihać, the park’s main town, is about 300 km from Sarajevo, which works out to roughly four and a half hours of driving on mostly single-carriageway roads. That is too far for an honest day trip from the capital, and it is worth saying plainly rather than dressing it up: a return trip from Sarajevo in a single day means over eight hours of driving for a few hours by the river. If Una National Park is the point of your trip, it makes more sense to build a short loop around it, or to approach from a different direction entirely.
That different direction, for a large share of visitors, is Croatia. Zagreb and Plitvice Lakes National Park are both closer to Bihać than Sarajevo is, and a good number of people visiting the Una arrive as a side trip from Croatia rather than from inside Bosnia and Herzegovina. If you are already routing through Zagreb, Zadar, or Plitvice, the Una is a realistic add-on; if you are based in Sarajevo for the whole trip, treat it as a dedicated one- or two-night excursion rather than a day out, or fold it into a wider north-west loop that also takes in Banja Luka.
Getting there without your own car is genuinely difficult. Public transport from Sarajevo to Bihać involves a long bus journey with a change, and local transport around the park itself is sparse. See driving in Bosnia and Herzegovina and car rental in Sarajevo if you are planning to self-drive from the capital; if you would rather not drive the whole route yourself, day trips without a car covers which parts of the country are realistically reachable by organised transport and which are not — the Una is firmly in the second group from Sarajevo.
Kulen Vakuf: the base that matters
Bihać is the nearest city and has the widest choice of accommodation and food, but the town that actually functions as the park’s operational base is Kulen Vakuf, a small settlement about 25 km south of Bihać, right where the Una’s most-rafted stretch begins. Most of the established rafting operators launch from here or from points just upstream and downstream of it, and a cluster of guesthouses, campsites, and riverside restaurants has grown up specifically to serve rafters and kayakers rather than sightseers passing through.
Staying in or near Kulen Vakuf rather than in Bihać itself cuts out a daily drive to the put-in points and puts you within easy reach of both Štrbački buk to the south and the calmer town stretch of the river to the north. Rooms are simple rather than smart — this is a rafting-and-fishing economy, not a resort — but they are inexpensive and the riverside restaurants serve trout pulled from water you can watch from the table.
Rafting and kayaking
This is what the park is known for, and it earns the reputation. The Una’s water is fed by karst springs, which keeps it clear and a genuine turquoise-green rather than the murky green-brown of most European rivers, and the river drops through a long series of rapids and small waterfalls that make for varied, scenic paddling without requiring expert-level whitewater skills on the standard commercial stretches.
The rafting season runs from May to September, tracking the snowmelt and the warmer air needed to make getting wet comfortable; June tends to have the fullest, most energetic water, while August is lower and calmer, better suited to families and first-timers. Half-day trips typically run 10-15 km and take two to three hours on the water; full-day trips cover more distance and usually include a stop at Štrbački buk.
Expect to pay somewhere in the region of 60-100 KM (about 30-51 EUR) per person for a half-day trip with a licensed operator, gear included, more for a full day or for kayaking with instruction rather than a raft. Operators run guided descents inside the park itself as well as gentler family stretches on the lower river, which is the distinction worth checking before you book.
For the practical detail — grading the rapids, choosing an operator, what to wear, and how the season actually behaves month by month — see rafting the Una and the broader rafting season and safety in Bosnia, which also covers the Neretva and Tara rivers for comparison.
Hiking and cycling
The park’s hiking is gentler than the alpine trails around Bjelašnica or Jahorina: this is river-valley walking, following the Una and its side streams through forest and past old mills and small waterfalls rather than climbing to summits. Marked trails link Kulen Vakuf, Štrbački buk, and Martin Brod, and can be walked in sections or combined into a longer route over one or two days if you are carrying gear and prepared to camp or find a room along the way.
Cycling is a realistic alternative to walking for covering more ground, and several of the guesthouses around Kulen Vakuf rent bikes. As with any hiking or off-track cycling in Bosnia and Herzegovina, the standing rule applies here as everywhere else in the country: stay on marked trails and established tracks. Landmines remain a real and unresolved hazard in parts of Bosnia and Herzegovina, including some rural and forested areas, and the only sound approach is to keep to signed paths and avoid wandering off them out of curiosity. See landmine safety when hiking in Bosnia before you set out; it applies equally to the Una valley.
Entry and costs
The park charges an entrance fee at its main access points, generally in the range of 5-10 KM (about 2.50-5 EUR) per person for a day visit, with small variations by season and entry point; rafting and kayaking trips booked through an operator usually include this in the package price, so you are not paying it twice. Parking at the main trailheads and viewpoints typically costs a few additional KM. Bring cash — card machines are unreliable this far from Sarajevo and Mostar, and small guesthouses, riverside grills, and parking attendants expect KM in hand. See money and currency in Bosnia and Herzegovina for the wider picture on cash versus card in the country.
| Item | Typical cost |
|---|---|
| Park entrance (day visitor) | 5-10 KM (≈2.50-5 EUR) |
| Half-day rafting, gear included | 60-100 KM (≈31-51 EUR) |
| Full-day rafting with Štrbački buk stop | 100-150 KM (≈51-77 EUR) |
| Simple guesthouse room, Kulen Vakuf | 40-70 KM (≈20-36 EUR) per person |
| Trout dinner, riverside restaurant | 15-25 KM (≈8-13 EUR) |
| Bike hire, half day | 15-20 KM (≈8-10 EUR) |
When to go
May and June bring the fullest water and the greenest surroundings, with rapids at their most energetic; this is the best window for serious rafters. July and August are warmest and busiest, with lower, calmer water that suits families and anyone kayaking for the first time, though Kulen Vakuf’s limited accommodation can fill up on summer weekends. September is a good compromise: still warm enough to raft and swim, noticeably quieter, and the water still clear. Outside May-September the rafting season effectively closes, and the park becomes a much quieter, colder hiking destination with most riverside businesses shut for the winter.
Combining the park with the rest of the region
Because of the distance from Sarajevo, the Una works best as part of a wider north-west loop rather than a detour from the capital. A common pattern is Sarajevo to Bihać via Jajce, with a stop to see the Pliva waterfall in the middle of Jajce itself, then a day or two based around Kulen Vakuf for rafting, Štrbački buk, and Martin Brod, before either returning to Sarajevo or continuing into Croatia towards Plitvice. If you are coming from Croatia in the first place, the Una can slot in as a single overnight before or after Plitvice, with a much shorter drive than the Sarajevo route.
For structured planning, Bosnia road trip, 7 days and Bosnia nature week both work the Una into a longer route rather than treating it as an isolated stop, which reflects how most people actually visit it. The broader planning guide for the park itself, including seasonal trail conditions and which operators run which stretches, is at Una National Park guide.
If your trip is anchored in Sarajevo and you cannot spare the days for the north-west, it is worth being honest that Bosnia and Herzegovina has other clear-water canyons closer to the capital, even if none quite match the Una’s scale and reputation.
FAQ: Una National Park
Is Una National Park the same as Štrbački buk?
No. Una National Park is the whole protected river system, roughly 200 square kilometres around Bihać and Kulen Vakuf, including hiking trails, villages, and multiple rafting stretches. Štrbački buk is one specific 24-metre waterfall inside the park, and the single most-visited spot within it.
How far is Una National Park from Sarajevo?
About 300 km, roughly four and a half hours by car on mostly single-carriageway roads. It is too far for a genuine day trip from Sarajevo; plan an overnight stay, or approach from Croatia if your route allows it.
Is it better to visit from Sarajevo or from Croatia?
Distance-wise, from Croatia: Zagreb and Plitvice Lakes are both closer to Bihać than Sarajevo is, and many visitors reach the park as a side trip from that direction. If your whole trip is based in Sarajevo, build the Una into a longer north-west loop rather than a single excursion.
Where should I actually stay?
Kulen Vakuf, about 25 km south of Bihać, functions as the park’s real operational base, with rafting operators, guesthouses, and riverside restaurants clustered around the main put-in points. Bihać itself has more choice of hotels but adds a daily drive to reach the river.
When is rafting season on the Una?
May to September. June has the fullest, most energetic water; August is lower and calmer, better for families and first-timers; September is quieter with water still warm enough to enjoy.
Is there an entrance fee for the park?
Yes, typically 5-10 KM (about 2.50-5 EUR) per person at the main access points for a day visit. Rafting and kayaking trips booked through an operator usually include this fee in the package price.
Is it safe to hike off the marked trails?
No, and this is not specific to the Una: parts of Bosnia and Herzegovina still have unresolved landmine contamination in rural and forested areas. Stay on marked trails and established tracks throughout the park, and see the dedicated landmine safety guide before any hiking in the country.
Can I visit without a car?
It is difficult. Public transport from Sarajevo to Bihać is a long journey with a change, and local transport around the park itself is limited, so most visitors self-drive or join an organised tour that includes transfers.
