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Discover Croatia’s stunning Mreznica River on a guided kayaking tour featuring waterfalls, natural pools, and adrenaline-pumping water slides. Perfect for adventure lovers.
If you’re craving a day of outdoor excitement surrounded by Croatia’s lush landscapes, the Upper Mreznica River Kayaking Adventure is a compelling choice. This guided tour offers more than just paddling—it’s a chance to experience the wild beauty of Mreznica’s waterfalls, natural pools, and rugged canyon scenery. With a high rating of 4.9 out of 5 from over 60 reviews, it’s clear that this trip hits the mark for adventure seekers and nature lovers alike.
One of the things we really appreciate about this experience is how it combines thrilling white-water sections with peaceful paddling through stunning scenery. Plus, the guides seem to do an excellent job of balancing safety with fun, making even nervous beginners feel comfortable. However, it’s worth noting that the tour is not suitable for children under 6 or those with low fitness levels, so it’s best suited for active travelers up for a physical outing.
For anyone interested in authentic Croatian landscapes, from waterfalls to emerald pools, this tour offers genuine value—especially when considering the included gear, guide expertise, and the chance to explore a less touristy, more natural side of Croatia.


This tour is more than just paddling down a river. It’s a full-on adventure through some of Croatia’s most spectacular natural features**. From the moment you arrive at the base near Slunj, you’re greeted with friendly staff, safety gear, and clear instructions. The company, TOURISM KUPA SPORT, appears well-organized, ensuring your experience runs smoothly from start to finish.
The itinerary kicks off with a transfer to the upper Mreznica River, where your guides will equip you with everything needed—helmets, paddles, and wetsuits if the water’s cold. The guides, such as Harry, receive praise for their professionalism and ability to make everyone feel safe, even those initially feeling nervous. As one reviewer put it, “the tour was super guided by Henry, and I felt safe at all times.”
The fun begins as you paddle through a series of 15 travertine waterfalls—each offering unique moments of thrill or tranquility. Some waterfalls are perfect for natural water slides, allowing you to glide down into inviting pools. Others might involve jumping from cliffs or walking around cascades, adding layers of excitement for those comfortable with such activities.
What makes this experience particularly engaging is the mix of action and relaxation. The journey starts and ends with adrenaline-pumping descents, but the middle section offers calmer paddling, giving you time to soak in the breathtaking scenery. Reviewers frequently mention the “incredibly clear water” and the striking beauty of the pools, which add to the sense of being truly immersed in nature.
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You’ll meet at the Kupa Sports – Rafting & Kayaking Base just 45 minutes from Plitvice Lakes, situated across from the Mreznica River bridge. Expect a short drive along a sometimes windy, busy road, so planning some extra time is wise. Here, you’ll leave your car in the parking area and gear up for the adventure.
The tour begins with safety instructions and the distribution of gear—most notably, helmets and paddles, with wetsuits provided if needed. Once on the water, the real fun starts. You’ll glide through areas filled with natural water slides, where you can ride down in your kayak or jump into pools from varying heights.
Most waterfalls are navigable from your kayak, and guides will help you decide whether to ride down or find alternative routes around cascades. The presence of 15 waterfalls means plenty of opportunities to experience both the thrill of sliding and the serenity of natural pools.
After exploring the waterfalls and pools, your guide will lead you back to the starting point. The drive back is quick, and afterward, you’ll have the chance to change into dry clothes and reflect on what you’ve just experienced.

Authentic Croatian landscapes are on full display throughout this tour. Reviewers repeatedly praise the beautiful scenery, with one mentioning the “beautiful landacapes, nice waterfalls,” and another highlighting the “indescribable natural backdrop.” This isn’t a manufactured tourist site but a genuine slice of Croatia’s wild natural beauty.
The guides seem to be a highlight, with Harry receiving particular praise for making everyone feel safe and ensuring the tour is fun. The small group size (as noted in reviews) allows for personalized attention, which makes the experience more relaxed and enjoyable.
Water clarity is outstanding, and the pools are often a vivid emerald or turquoise, providing perfect photo opportunities. Some reviews mention the added bonus of a spring at the bottom part of the river, which enhances the refreshing feeling.
For families and thrill-seekers, this tour offers a good balance. Kids over 6 can join, but only if accompanied by parents, and those with low fitness levels should consider their comfort with paddling and jumping activities.

What to Bring: Swimwear, a change of clothes, towel, snacks, water, sunscreen, and water shoes are recommended. Pack light but be prepared for getting wet.
Timing: The tour lasts around three hours of water activity, with additional travel time factored in. It’s best to arrive prepared for a full morning or afternoon of adventure.
Price and Value: At $71 per person, the price includes all necessary equipment, professional guides, and safety gear. Considering the activity level, scenery, and small group setting, it provides excellent value for adrenaline junkies and nature lovers alike.
Age and Fitness: Not suitable for children under 6 or those with limited mobility or low fitness levels.
Cancellation Policy: Flexible, with free cancellations up to 24 hours in advance, making it easy to book with confidence.

This adventure suits travelers who enjoy active outdoor pursuits and are eager to explore the less crowded corners of Croatia. It’s perfect for those who want a combination of thrill and natural beauty, and who aren’t afraid of getting wet or jumping from heights. Families with older children and teenagers will find it especially engaging, as long as their fitness and comfort levels are suitable.
If you’re after a relaxed sightseeing tour, this might not be the right fit. But if you’re craving a day of adventure, stunning landscapes, and authentic Croatian wilderness, this kayaking experience will not disappoint.

Is the tour suitable for children?
Children over 6 years old can join, but only with parental consent. Younger kids or those with low fitness should consider other options.
What equipment is provided?
Your tour includes a kayak, paddle, helmet, and neoprene suit if necessary. Wetsuits are included if the water is cold.
How strenuous is the activity?
It involves paddling and some jumping or riding down waterfalls. It’s active but manageable for those with basic fitness. The guides do their best to ensure safety and fun.
Are the waterfalls navigable?
Most waterfalls can be ridden down in the kayak, but some may require walking around or jumping from cliffs if you’re comfortable.
What should I bring?
Swimwear, a change of clothes, towel, snacks, water, sunscreen, and water shoes are recommended. Don’t forget your camera or waterproof phone case if you want photos.
How long does the tour last?
The water activity itself lasts approximately three hours, with additional time for transfer and preparation.
Is transportation included?
Transport to the starting point is included, but not arranged by the tour provider. You should arrive at the meeting point on your own.
Can I cancel if my plans change?
Yes, cancellations are free up to 24 hours before the tour, offering flexibility if your plans shift.
Is the water cold?
Depending on the season, water temperature can vary, and wetsuits are provided if needed to keep you comfortable.
Choosing the Slunj: Upper Mreznica River Kayaking Adventure means opting for a day of genuine Croatian natural beauty and adrenaline-fueled fun. Whether you’re a seasoned paddler or a first-timer eager to try something new, this tour offers an ideal mix of excitement, scenic wonder, and safety.
The knowledgeable guides, especially Harry, help create a relaxed, fun atmosphere that makes even nervous participants feel confident. You’ll love the stunning waterfalls, emerald pools, and the chance to slide down natural water slides—these are your tickets to a memorable experience.
While it’s not suited for very young children or those seeking a leisurely sightseeing day, active travelers and adventure lovers will find this tour a great value. It’s perfect for those wanting to explore Croatia’s rugged wilderness away from the crowds and enjoy a truly authentic outdoor excursion.
This experience isn’t just a paddle on a river—it’s a chance to connect with Croatia’s wild side, enjoy some natural thrills, and create stories to tell long after the water has dried. A highly recommended outing for anyone with a spirit for adventure and a love of nature.