Una National Park guide
Bihać: Una National Park Guided Rafting Adventure
What are the highlights of Una National Park in Bosnia?
Una National Park protects the Una River canyon in northwest Bosnia, home to Štrbački Buk (the most powerful waterfall in Bosnia), multi-grade white-water rafting, kayaking, travertine pools, and the medieval town of Bihać as base. Best season is April-October for rafting; the falls are most powerful in spring.
Una National Park sits in a quiet corner of northwest Bosnia that most visitors never reach — and that is precisely its appeal. The Una River has carved one of the most spectacular canyon systems in the western Balkans, creating a sequence of waterfalls, travertine pools, rapids, and turquoise pools that rivals anything in Croatia’s Plitvice or Krka parks, without the crowds or the entrance queue. The park was established in 2008 and protects 198 square kilometres of river canyon, mixed forest, and traditional villages.
The Una River: character and course
The Una rises in Croatia near Srb and enters Bosnia near Bihać, where it begins a series of increasingly dramatic descents through the Unac canyon and the Štrbački Buk gorge before joining the Sava River at Jasenovac. The name Una is Latin for “unique” — a name given, according to legend, by a Roman soldier who had never seen a river of such colour and character.
The river’s colour is its defining feature: a shifting palette of turquoise, emerald, and white foam that changes with depth, light, and season. The tufa (travertine) formations that colour the riverbed are the same calcium-rich deposits seen at Kravice and Plitvice, but on a larger and more varied scale.
Štrbački Buk: the crown waterfall
Štrbački Buk, near the village of Martin Brod in the southern part of the park, is the most dramatic waterfall in Bosnia. The Una drops approximately 24 metres in a series of steps across a width of roughly 60 metres, creating a thunderous horseshoe cataract with spray visible from 200 metres away.
The falls are most powerful from March to June when snowmelt and spring rains bring the river to full flow; in summer the water level drops but the falls remain impressive. Access requires a short hike (2-3km from the nearest road) or passage by raft; the isolation contributes to the experience. See the full Štrbački Buk guide for the detailed visit logistics.
Rafting the Una
White-water rafting is the reason most active travellers come to Una National Park. The river offers several distinct sections:
Lower Una (Bihać area) — Relaxed Rafting
The Relaxed Rafting tour on the Lower Una covers the gentle stretches near Bihać — grades I-II, crystal-clear water, minimal technical challenge. Suitable for families with children and anyone new to rafting. Duration: 2-3 hours on the water. Cost: approximately 45-70 BAM per person.
Upper Una (Martin Brod canyon) — Technical Rafting
The Una National Park guided rafting adventure covers the more technical canyon sections including passage through the Štrbački Buk area (grades III-IV at peak flow). This is a full-day experience requiring a minimum age and some paddling fitness. Cost: approximately 80-120 BAM per person including transport from Bihać.
Both tours operate April-October; peak season is May-June (highest water) and July-August (warmest water for swimming between rapids).
Kayaking the Una
Kayak with Una Pirates is an independent kayak experience on the Una River, navigating specific sections with guides. Suitable for those who prefer individual craft to a group raft. Duration: 2-4 hours depending on the route.
Walking and hiking in Una NP
The park has a network of marked trails ranging from easy riverside walks to longer ridge routes above the canyon. Key hikes:
- Štrbački Buk trail (from Martin Brod): 2km each way on a flat riverside path to the falls
- Klokot springs circular: a 6km loop starting from Bihać, visiting the Klokot karst springs (among the largest in Bosnia)
- Grmuša ridge: above the Grmuša canyon, 12km, panoramic views over the Una valley
Trails are marked but not always maintained to the standard of national parks in Western Europe. A 1:50,000 park map (available in Bihać) is useful for longer routes.
Bihać: the base town
Bihać, the regional capital of the Una-Sana canton, is the logical base for the park. It is not a particularly tourist-oriented town but has adequate accommodation, restaurants, and transport connections. The old town retains an Ottoman tower (Kapetanova kula) and a medieval mosque (originally a church) that are worth an hour’s walk.
The Una River flows through the centre of Bihać itself, and a riverside walk between the two main bridges gives a taste of the river before any organised activity.
Getting there
- By bus: Bihać is connected to Sarajevo by daily buses (4-5 hours). Buses also run to Zagreb and other Croatian cities.
- By car: From Sarajevo, drive north via Zenica and Jajce, then northwest toward Bihać. Total 290km, approximately 4 hours on good roads.
- Day trip tours: Some operators offer full-day tours from Sarajevo to Una NP including transport, rafting, and a park visit (very long day — 10+ hours). Staying overnight in Bihać is strongly preferred.
Season and practicalities
| Month | Rafting | Water Temp | Waterfall Power | Crowd Level |
|---|---|---|---|---|
| April | Good | Cold (10°C) | High | Low |
| May-June | Excellent | Cool (14-17°C) | Very high | Low-Medium |
| July-August | Good | Warm (20°C+) | Medium | High |
| September-October | Good | Cool | Medium | Low |
| Nov-March | Closed/limited | Cold | Variable | Very low |
Entry to the national park: 5-10 BAM per person. Rafting and kayaking tours include park fees. Camping is permitted in designated areas within the park.
For the broad Bosnian rafting picture, the rafting in Bosnia guide compares Una, Neretva, and Tara. See also the Kravice waterfalls guide for Herzegovina’s most accessible waterfall.
Frequently asked questions about Una National Park
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Top experiences
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