Mreznica Canyon Kayaking Tour near Plitvice Lakes

The Mreznica River

The Mreznica is a karst river in central Croatia that flows north for around 64 km before joining the Korana in Karlovac. Like the Plitvice Lakes, it is shaped by tufa: as the clear, mineral-rich water passes over mosses, calcium carbonate builds natural barriers, creating more than 90 waterfalls along the river. Its water is famously clean and changes colour from emerald to turquoise with the light.

Because much of its course runs through a deep canyon with few roads, the Mreznica remains one of the least developed rivers in the country. A Mreznica river kayak tour is the best way to see it: from the water you reach waterfalls, springs and pools that cannot be seen from the banks. In summer the water stays refreshing, and the shade of the canyon keeps the air pleasant.

The upper canyon between Primislje and Trzic

This tour paddles the upper canyon between the villages of Primislje and Trzic, considered the most beautiful part of the river. Here the Mreznica cuts a deep and narrow gorge between cliffs of white rock and lush vegetation, so deep that the sun only reaches the water for a few hours a day, producing a striking play of light and shadow.

The route is about 4 km long and takes around three hours with stops, at an easy pace that leaves time to look around. Your guide leads the group, explains the safest line through each section and points out birds, springs and rock formations along the way. It is a true wilderness experience, yet close to the main road between Zagreb and the Plitvice Lakes.

Tufa waterfalls, rapids and natural pools

The highlight of the trip is riding the cascading waterfalls. The tufa barriers form small drops and chutes that the sit-on-top kayaks slide down with a splash, a thrill that beginners and children enjoy as much as experienced paddlers. Between them, gentle rapids carry you along and calm pools invite you to stop.

Along the canyon, strong freshwater springs flow into the river, and the pools beneath the waterfalls are perfect for a swim on a hot day. The guides choose safe places to stop, swim and take photos. In spring the water is higher and livelier; in summer it is calmer and warmer, and the canyon offers welcome shade. Neoprene suits and rain jackets are provided in cold weather.

Primislje and the kayak base

The adventure starts in Primislje, a quiet village on the Mreznica about 14 km west of Slunj. At the base you find parking, toilets and changing rooms, and you receive your helmet, safety vest, neoprene shoes and kayak. After a 15-minute safety briefing, a van takes you a few minutes to the launch point and collects you again at the end.

How to get to Primislje: from Slunj, drive west through Gornji Popovac; the base is on your right after entering Primislje, about 4 km before the Mreznica bridge. From Ogulin, take road D42 to Tounj and turn toward Slunj and Primislje. Transport can be arranged on request, and our team can advise you on WhatsApp.

Plitvice Lakes, Slunj and Rastoke nearby

The Mreznica canyon lies within easy reach of the Plitvice Lakes National Park, the UNESCO-listed chain of 16 terraced lakes and waterfalls that is Croatia's most visited natural sight. Many travellers combine a morning at the lakes with an afternoon kayaking trip, or kayak on the way between Zagreb and the coast.

Close to the base is Slunj, with the village of Rastoke, where the Slunjcica River tumbles into the Korana over waterfalls between old wooden water mills. Guests from Plitvice, Korenica, Slunj, Rastoke, Karlovac and Zagreb all join this tour. The kayaking season runs from April to October, which is also the best time to visit the Plitvice Lakes and their surroundings.