Kayaking on Upper Mreznica River – Slunj, Croatia

The best part of this Upper Mrežnica kayaking trip is its changing pace. You paddle quiet stretches, then suddenly slide over a travertine ledge, jump into a pool, or steer beneath a waterfall as high as 8 meters. The river’s warm pools make the wet sections easier to enjoy, even for first-timers.

I like the mix of kayaking and light canyoning, and I like that the guides provide equipment, instruction, and transfers from the base to the river start. The main caution is group size: the maximum is 20 people, and one outing was described as feeling much larger than nearby groups, which can mean more waiting at the falls.

Key points to know before you book

• Up to 15 waterfalls: You may kayak over several falls, use natural slides, jump into lower pools, or walk around a cascade.
• Warm river pools: The Mrežnica offers natural swimming stops between the waterfalls, with water that can feel pleasantly mild.
• Beginners are welcome: Paddling instruction and safety gear are provided, and children from age six can participate.
• Three hours at about $65.33: The price includes equipment, taxes, guides, and local transfers, but not transport to the base, food, drinks, or photos.
• A practical Plitvice add-on: The base is about 30 minutes from Plitvice Lakes and about 1.5 hours from Zagreb, according to the tour details.
• Small details matter: Ask about the day’s group size and water conditions if you want the least crowded, most active outing possible.

Why the Mrežnica is more than a standard kayak trip

Many river excursions give you one main activity: paddle downstream and stay in the boat. The Mrežnica offers a more playful format. You use the kayak for much of the route, but the river also gives you natural waterslides, swimming pools, rocky jumps, and short stretches where you walk around a cascade.

That variety is the reason I would choose this over a plain flat-water paddle. You are not simply moving through the countryside. The river keeps presenting small decisions: paddle over the fall, follow the guide’s line, take the slide, jump, or go around.

The waterfalls are made of travertine, a porous limestone that forms natural ledges and barriers in the river. These falls are not all giant drops. Some are small enough to ride directly, while others require more care. The biggest listed waterfall reaches 8 meters, but the appeal comes from the sequence of many falls rather than one dramatic plunge.

The middle portion is calmer. That matters because you get time to look around, catch your breath, and enjoy the clear pools and wooded canyon. The opening and closing sections are described as the most active, so expect the tour to build energy, settle down, and then finish with more action.

Arriving at Kupa Sports in Tounj

You meet at Kupa Sports White Water Adventure, at Tržič Tounjski 91 in Tounj. This is the fixed start and end point, so arrange your own way there. The included local transfer refers to transport connected with the river route, not a pickup from Zagreb, Plitvice Lakes, or your hotel.

That distinction is important. The experience is presented as roughly 30 minutes from Plitvice Lakes and 1.5 hours from Zagreb, but those figures are useful planning guides, not included hotel transfers. If you are staying near Plitvice, this can fit well into a day outside the national park. From Zagreb, it is a longer outing and deserves a full block of time.

At the base, you receive the necessary safety equipment. Neoprene suits are available when needed, which is useful if the water or weather feels cool. You should still arrive ready to get wet and bring dry clothes for the return.

The base also has a place to change afterward. One participant noted the option to buy drinks and use a rest area, but bottled water is not included in the tour price. Lunch is also on you, so pack food if you need something more substantial after the paddle.

Safety gear, instruction, and the short drive to the river

Before you enter the water, the guide gives paddling instructions and explains how to handle the falls. This is a key part of the outing for beginners. You do not need to arrive with white-water experience, and the activity is open to children from age six.

The equipment is included, which keeps the $65.33 price from growing through separate rental charges. Safety gear is supplied, and neoprene suits may be provided if conditions call for them. The guides also help you decide how to approach the more active sections.

After the briefing, you are driven to the river start. This transfer is convenient, but it also explains why the total outing can feel longer than the time spent actually paddling. One person found the drive from the base to the entry point longer than expected. If your schedule is tight, ask the operator about the full door-to-door timing rather than relying only on the approximately three-hour duration.

The guide support is one of the strongest parts of the experience when the group is well managed. Denis is praised for watching the group closely, helping at drops when needed, and allowing people to handle easier sections by themselves. Another account names Alex as assisting Denis. The result should be useful guidance without taking away every bit of independence.

Riding the first waterfalls

The first active section gets you into the character of the Mrežnica quickly. Instead of a long, quiet warm-up, you begin working with moving water and low falls. Your guide helps position the kayak and explains when to paddle, when to hold your line, and when to let the water carry you.

Some falls can be ridden in the kayak. Others may be handled with a natural waterslide, a jump into the pool below, or a short walk around the cascade. You are not forced into one option at every point, and the guide’s judgment matters here.

The kayaks are described as comfortable tandem boats, making them a good fit for couples, friends, and families. Tandem kayaks also give a less experienced paddler a steadier partner. You should expect teamwork, though. Both people need to listen to the guide and paddle together when approaching a drop.

The most enjoyable moments are likely to be the small surprises. A calm approach can turn into a quick slide. A low ledge can become a clean kayak drop. A pool below a fall invites a swim or jump before you continue downstream.

Fifteen travertine falls and warm pools

The route includes as many as 15 travertine waterfalls. The exact feel of the day depends on water levels and the group, but the river’s structure gives the trip plenty of variety.

Between the falls, the Mrežnica forms pools that are described as warm and well suited for refreshment. These swimming breaks keep the outing from becoming a nonstop test of paddling skills. You can cool off, watch the rest of the group pass a fall, and enjoy the river at a slower pace.

The setting is one of the main reasons to make the trip. The canyon, waterfalls, and differently colored pools create a setting that feels wilder than a simple recreational lake. Turtles and dragonflies have also been spotted along the route, so keep your eyes open during the quieter paddling sections.

Do not expect every waterfall to be a major adrenaline rush. That is a strength for families and mixed-ability groups, but it may feel less intense if you want continuous white-water action. The river alternates between gentle paddling and technical little drops rather than offering one uninterrupted run.

The quiet middle section

The calmer middle part is easy to underestimate. After the early falls, it gives you a chance to settle into the boat and enjoy the surroundings. You can look for wildlife, watch the changing colors of the pools, and appreciate how the river moves through the canyon.

This is also where a large group can become more noticeable. A group of 20 is not enormous for an organized outdoor activity, but the narrow river and waterfall stops can create bottlenecks. You might wait while several boats clear a drop or while people decide between paddling, sliding, jumping, and walking around.

If personal attention matters most to you, ask about the expected group size before booking. Several accounts describe friendly, patient instruction, while one found the leader less engaged and the group too large. That difference may come down to the guide assigned and the number of people on your date.

The final falls and return to the base

The route becomes active again near the end. You get more chances to paddle over falls, use slides, jump into pools, or receive help from the guide. This closing burst gives the outing a satisfying finish rather than ending on a long, flat paddle.

Once you reach the finish, a quick drive takes you back to Kupa Sports. You can change into dry clothes at the base before leaving. Since the activity ends where it began, you do not need to arrange a separate return from the river.

Photos are not included. If you want a record of the slides and falls, ask before the activity begins about the operator’s photo option, but do not assume it is part of the $65.33 price. Keep your valuables protected, since this is a wet outdoor activity.

Is $65.33 a fair price?

At about $65.33 per person, the price is reasonable for a three-hour guided river outing that includes equipment, safety gear, local river transfers, licensed guides, and all fees and taxes. You are paying for more than kayak hire. Instruction, logistics, and help at the falls are part of the value.

The price becomes stronger if you are staying near Plitvice and would otherwise need to rent equipment or work out your own river access. The included transfer to the start also removes a confusing piece of planning.

The value is less clear if you are only counting time in the kayak or if you need transportation from your hotel. Transport to and from the attraction is not included, nor are lunch, bottled water, gratuities, or photos. Add those costs when planning the day.

For families, the included equipment and beginner-friendly format can make the price easier to justify. For experienced paddlers, the main question is group size and how much independent river time you will get.

Who will enjoy this most?

I would recommend the Mrežnica trip to families with children aged six and older, couples who want an active half-day, and first-time kayakers who like a little adventure without signing up for a serious white-water expedition.

It also suits mixed groups. One person can be more cautious at a waterfall while another chooses the slide or jump, provided the guide and conditions allow it. The option to walk around some cascades makes the route more flexible than an activity where every participant must take every drop.

You should think twice if you dislike getting wet, waiting for other boats, or sharing an activity with a group that may reach 20 people. This is not a private nature outing. It is a guided river adventure with a social, sometimes busy rhythm.

Most people can participate, but the activity still involves paddling, swimming, climbing around cascades, and handling moving water. If you are unsure about your fitness or a child’s comfort level, contact the operator before booking.

Booking, weather, and timing advice

Confirmation is provided at booking, and free cancellation is available if you cancel at least 24 hours before the start time. Changes or cancellations inside that window are not refunded.

The activity depends on good weather. If poor weather forces a cancellation, you can receive a different date or a full refund. The operator also requires a minimum number of participants, so a cancellation for low numbers comes with the choice of another date or experience, or a refund.

The tour is offered in English. Since the river route includes safety instructions, make sure everyone in your group can understand the guide before setting off.

I would reserve ahead rather than wait until the last minute. The activity is booked, on average, 22 days ahead, which suggests that popular dates can fill well before your Croatian trip begins.

Should you book the Upper Mrežnica kayaking trip?

Book it if you want active time near Plitvice that combines paddling, swimming, waterfalls, and small canyoning challenges. The warm pools, up to 15 falls, comfortable tandem kayaks, and patient guide support make it approachable for beginners and families.

Before paying, ask about the expected group size and the timing of the transfer from the base to the river. Those two details will shape the day more than the advertised three-hour length.

For a first kayak outing, this is a strong choice. For a quieter or more private experience, look for a smaller group. For most people who want a playful introduction to Croatia’s rivers, the Mrežnica offers enough action to be memorable without requiring advanced skills.

FAQ

Where does the kayaking tour start?

It starts at Kupa Sports White Water Adventure, Tržič Tounjski 91, 47264 Tounj, Croatia.

Where does the activity end?

The activity ends back at the Kupa Sports meeting point.

How long does the tour last?

The experience lasts approximately three hours.

How much does the tour cost?

The listed price is $65.33 per person.

Is equipment included?

Yes. Necessary equipment, safety gear, and all fees and taxes are included. Neoprene suits are provided if necessary.

Are local transfers included?

Yes. Local transfers connected with the river activity are included. Transport to and from the attraction or meeting point is not included.

Can beginners join?

Yes. Beginners can participate, and paddling instructions are provided before entering the river.

What is the minimum age?

Children from six years old are welcome to participate.

How many waterfalls are on the route?

The route includes up to 15 travertine waterfalls, with the highest reaching 8 meters.

Is food and drinking water included?

No. Lunch and bottled water are not included. Gratuities are optional, and tour photos are not included.