Kayaking on Upper Mreznica River – Slunj, Croatia

Waterfalls turn a river trip into an adventure. This three-hour outing on Croatia’s Mrežnica River mixes calm paddling, warm swimming pools, natural slides, and kayak rides over travertine waterfalls. I especially like the chance to see up to 15 cascades from water level, and the fact that beginners and children from age six can join. The main drawback is that the base is in Tounj, not directly beside Plitvice Lakes, and the transfer to the river put-in can make the day feel longer than the advertised three hours.

I also like that the price includes equipment, safety gear, licensed guides, and local transfers. Guides such as Denis have earned praise for helping at the drops while still giving confident paddlers room to manage the river themselves. Group size can reach 20, though smaller departures may feel more personal and easier to manage.

Key points at a glance

• Up to 15 waterfalls: Paddle, walk, slide, or jump around a series of travertine cascades.
• Warm pools between the falls: The river offers natural places to cool off and swim.
• Beginner-friendly adventure: Instruction and safety gear are provided, and children from six are welcome.
• A mixed pace: The opening and final sections are active, while the middle offers quieter paddling.
• Convenient from major sights: The base is about 30 minutes from Plitvice Lakes and 1.5 hours from Zagreb.
• Good value at $65.33: Equipment, taxes, guides, and local transfers are included, but food, drinks, photos, and travel to the base are extra.

Why Mrežnica is worth your time

The Mrežnica is not simply a river for paddling from point A to point B. Its travertine barriers create a chain of pools, small rapids, and waterfalls. The highest waterfall on this route reaches about 8 meters, giving the trip a strong sense of action without turning it into an expert-only expedition.

I like the rhythm of this river. You get an active start, some calmer water in the middle, and another lively stretch toward the finish. That variety matters. A trip made entirely of rapids can become tiring, while a quiet float may leave you wishing for more excitement. Here, you get time to paddle, look around, swim, and prepare for the next drop.

The water also gives you something you will not get at the famous viewpoints in Plitvice Lakes. At Plitvice, you follow boardwalks and look down on waterfalls. On the Mrežnica, you approach the cascades from within the river. You may ride below them in your kayak, pass down a natural waterslide, jump into a lower pool, or walk around a section when that is the safer choice.

The setting feels wild, but the experience is structured. You are not being left to work out the river alone. A guide leads the group and helps with the more awkward drops.

Arriving at the Tounj base

Your meeting point is Kupa Sports, the Rafting & Kayaking base Mrežnica at Tržić Tounjski 91 in Tounj. This is the place to allow extra time for arrival, changing, and preparation.

The tour is described as about three hours, but that does not mean three uninterrupted hours in the kayak. At the base, you receive the necessary equipment, safety gear, and a neoprene suit if conditions call for one. You then receive paddling and safety instructions before a local transfer takes you to the starting point.

That transfer is useful because it saves you from finding the river access point yourself. It also explains why you should not schedule another tightly timed activity immediately afterward. One account of the trip found the put-in considerably removed from the base, adding time to the overall outing.

A changing area is available when you return. You can change into dry clothes and rest at the base, with drinks available for purchase. Lunch and bottled water are not included, so bring what you need for the day or plan to buy a drink afterward.

The first splashy section

The start of the route is one of the most active parts. After the guide positions everyone and explains how to approach the first obstacles, you begin working through the river’s small drops, rapids, and waterfalls.

Some cascades can be ridden directly in the kayak. Others call for a natural waterslide, a jump into the pool below, or a short walk around the waterfall. The exact choice depends on the conditions, the group, and the guide’s judgment.

This is where good instruction makes a real difference. A tandem kayak is generally forgiving for beginners, but the boat still needs to be pointed correctly as you approach a drop. Denis has been praised for watching the group closely, offering help when needed, and allowing capable paddlers to handle sections on their own.

You should expect splashing and the chance of getting fully wet. That is part of the appeal, not a surprise. Wear a swimsuit under the provided gear, and have dry clothes ready for the return to the base.

The route also gives you choices. You may prefer to ride more waterfalls in the kayak, while someone else in your group may want to jump or use a slide. The guides can help you understand the options, but you should only choose an activity that feels comfortable to you.

Quiet water, warm pools, and river life

The middle section slows down. After the first burst of rapids and cascades, you get calmer paddling and a better chance to notice the river itself.

The waterfalls form pools of relatively warm water. These pools are useful for cooling off, but they also make the river feel less severe than a cold mountain stream. You can swim beneath some falls, float in the lower pools, and take a breath before the next active section.

The surroundings are one of the strongest reasons to book this trip. The river has differently colored pools, rock shelves, forest, and small wildlife along the banks. Turtles and dragonflies have been spotted along the route, details that are easy to miss if you focus only on the next rapid.

This quiet middle section also suits families. Younger children may enjoy the falls but need a pause between them. A family of four found the mix of rapids, jumps, and peaceful stretches easy to enjoy together, with special care from the guide at the more demanding points.

Do not expect a sightseeing cruise with constant commentary. The focus is paddling and river safety. Still, the slower water gives you room to look around and enjoy the character of the Mrežnica.

The final waterfalls and return to base

The end of the route becomes active again. You return to a series of drops and rapids, finishing with the same lively feel that marked the beginning.

By this point, you will understand how the kayak responds and how to work with your partner. That makes the final section more enjoyable than the first few obstacles, when you are still learning the basics. You may ride additional waterfalls, pass through lower pools, or take a safer route around a cascade.

The route ends with a short drive back to Kupa Sports. There, you can change out of wet clothing and collect your belongings. Since the activity ends at the original meeting point, you do not need to arrange a separate return transfer from the river.

The post-trip setup is practical rather than elaborate. There is a place to change and rest, and drinks may be purchased, but lunch is not part of the package. If you are continuing on to another attraction, allow time to dry off and regroup.

How much action should you expect?

This is an adventure outing, but the supplied details point to a beginner-friendly version of white-water kayaking rather than a technical expedition. You receive instruction, safety equipment, and help from a licensed guide. Most people can participate, and children from six are accepted.

That does not mean the river is passive. You will handle rapids, waterfalls, rocks, swimming pools, and possibly jumps. If you dislike getting wet, heights, or sudden drops, this may not be your ideal way to see the Mrežnica.

The guides appear to adjust their help to the group. Denis has been singled out for being patient with first-time paddlers and attentive around the falls. Another guide was especially supportive with a child who needed extra care. Those details matter because a capable guide can turn a nervous first run into a rewarding one.

You should also remember that a group of up to 20 people may be on the trip. That is manageable, but it can mean waiting at certain waterfalls and less one-on-one attention. A smaller departure will likely feel more relaxed. If group size matters to you, ask the operator what is expected for your date.

Price, inclusions, and real value

At $65.33 per person, the price is fair for an active half-day outing. The package includes the necessary equipment, safety gear, applicable fees and taxes, licensed guides, and local transfers between the base and the river start.

That saves you from renting equipment separately or solving the transport puzzle on your own. It also puts the safety briefing and river decisions in the hands of a local team.

You still need to budget for your journey to Tounj, food, bottled water, gratuities, and tour photographs. Transport to and from the attraction is not included, despite the local transfers within the activity. That distinction is important if you are staying in Zagreb, Plitvice, or elsewhere.

The value is strongest for couples and families who want a ready-to-go outdoor activity. It is also appealing if you are driving between Zagreb and the Plitvice area. The base is roughly 1.5 hours from Zagreb and about 30 minutes from Plitvice Lakes, making it possible to combine with a wider Croatia road trip.

I would not book it purely as a quick add-on to a packed Plitvice day. The meeting point, equipment fitting, river transfer, paddling time, and return can take more of your day than the three-hour estimate suggests.

Booking timing and weather concerns

This outing is often reserved about 22 days ahead, which tells you to avoid leaving it until the last minute during a busy season. Confirmation is issued at booking, and the activity accepts a maximum of 20 people.

Weather matters. If poor weather forces cancellation, you can choose another date or receive a full refund. The tour also needs a minimum number of participants. If that minimum is not reached, you are offered another date or activity, or a full refund.

Free cancellation is available if you cancel at least 24 hours before the start time. Changes or cancellations made within 24 hours are not accepted for a refund, so check the local start time carefully before making plans.

Because the operator provides safety gear and neoprene suits when needed, you do not have to predict every water condition yourself. You should still pack dry clothes and plan for a wet activity.

Who will enjoy this Mrežnica trip?

I think this trip suits you best if you want active sightseeing with a clear safety structure. It works well for couples, families, and first-time kayakers who like the idea of rapids but do not want to arrange a private expedition.

Children from age six are welcome, which broadens the appeal for families. Still, parents should be comfortable with their children being around waterfalls, pools, and kayak drops. The guide can provide support, but each participant needs to follow the instructions and use the safety gear properly.

Confident paddlers may enjoy the freedom to take on some drops independently. People who want a quiet river float may find the waterfalls and jumps too energetic. Also, if you strongly prefer small groups, a possible 20-person departure is worth considering before you pay.

The trip is a particularly good match for a Croatia road trip. If you are based near Zagreb or visiting Plitvice Lakes, Mrežnica adds a very different kind of water experience to the usual national park walk.

Should you book Upper Mrežnica kayaking?

I would book this tour if you want a well-organized introduction to river adventure and like the idea of kayaking through waterfalls rather than simply viewing them from a path. The warm pools, natural slides, wildlife, and alternating calm and active sections give the outing real variety.

The main caution is logistics. The base is in Tounj, local transfers take time, and a larger group may reduce the personal feel. Bring dry clothes, allow more than three hours in your schedule, and ask about group size if that affects your decision.

At $65.33, the combination of gear, guides, instruction, and local transfers makes good sense. Book it if your idea of a memorable Croatian afternoon includes getting soaked, paddling through clear pools, and laughing your way over a waterfall.

FAQ

Where does the kayaking tour begin and end?

The tour begins at Kupa Sports, Rafting & Kayaking base Mrežnica, Tržić Tounjski 91, 47264 Tounj, Croatia. It ends back at the same meeting point.

How long does the activity last?

The kayaking experience lasts approximately three hours. The total time may be longer when you include preparation and the local transfer to the river start.

How many waterfalls will I see?

The route includes up to 15 travertine waterfalls. The highest waterfall is about 8 meters.

Can beginners join?

Yes. Beginners can participate, and paddling instructions are provided before the activity begins.

What is the minimum age?

Children from six years old are welcome to participate.

Is equipment provided?

Yes. Necessary equipment and safety gear are included. Neoprene suits are provided when needed.

Are local transfers included?

Yes. Local transfers between the base and the river start are included. Transport to and from the attraction is not included.

What does the price include?

The $65.33 price includes necessary equipment, all fees and taxes, local transfers, and licensed guides. Lunch, bottled water, gratuities, photographs, and transport to and from the attraction are not included.

What happens if the weather is poor?

If poor weather cancels the activity, you can choose a different date or receive a full refund. Free cancellation is also available when you cancel at least 24 hours before the start time.