Intex Challenger K1

The Intex Challenger K1 is one of the cheapest inflatable kayaks. It even comes in a complete set, so that nothing stands in the way of an immediate paddling tour. We now wanted to know for ourselves how is it to paddle the Intex 1-person kayak and can it compete with a good quality inflatable kayak.

This inflatable kayak is also available as 2-person model. Make sure to check out our review on the Intex Challenger K2 as well, if you are interested in paddling with someone else together. We have also a complete guide about Intex boats and kayaks.

Technical Specification

Nr of Persons: 1
Length: 108 in
Width: 30 in
Weight: 28.4 lb
Pack Size: 16.25 in x 23.13 in x 8.50 in

Max Load: 220 lb
Pressure: 0,0069 bar
Material: PVC
Manufacturer: Intex

Set-up and first impressions

The Intex Challenger K1 comes in a compact and very light carrying bag. Since the boat weighs only 28.4 lb, it can be carried comfortably over short distances with the included carrying bag. But the carrying bag is not robust. The material of the bag is so thin that already after the first use there was a small hole in the bottom.

Intex Challenger K1 transport
The boat weighs 26.5 lbs and can be transported with a carrier bag.
Intex Challenger K1 bag
The carrying bag contains a complete set, including paddle and pump.

The inflatable kayak is quickly unpacked and amazingly handy. To inflate the kayak you need to unfold it. The Intex Challenger K1 has two separate air chambers, a bottom chamber and a side chamber, each inflated by a Boston valve. Boston valves are 2-way screw valves that allow a quick and safe air inflation and deflation. Due to the separate air chambers it is still possible to reach the shore safely even if one chamber fails.

The bottom chamber is inflated at first with the supplied pump. Inflating is very easy and goes relatively quickly. Nevertheless, many strokes with the air pump are necessary, because the pump is quite small. Fortunately the kayak is not too big. After inflating the bottom, the second chamber needs to be filled with air, which forms the sides and the deck of the kayak.

inflatable kayak Intex Challenger setup
The kayak is easily unpacked and is very compact.
intex inflatable kayak setup
Boston valves are used to inflate the kayak
intex challenger inflation
The use the included air pump to inflate the boat.

After inflating the two air chambers, the boat has reached its final shape. The interior does not seem very large. There is a hook-and-loop fastener on the floor, which is intended for fixing the seat.

intex boat space
Completely infltated - the interoir does not seem to provice much space.

If you are not sure when the correct air pressure is reached, you can measure it. Intex has printed a measuring scale on each chamber for this purpose. With the enclosed measuring strip, it can be checked whether there is enough air in the air chambers or whether one of them still needs to be pumped up.

inflatable kayak air pressure
The air pressure can be easily checked with the measuring strip.

The seat can also be inflated with the air pump. This consists of an inflatable seat cushion and a backrest. The backrest is attached to the side walls with straps and can be adjusted as desired. The seat is slightly wide and bulky for the small interior of the boat. Instead, the seat sits firmly in the boat as soon as it is properly placed in the interior. The fastening of the seat with Velcro is a simple and good idea of the manufacturer.

inflatable kayak seat
The seat is inflated via two valves.
intex challenger k1 seat
The seat is attached to the boat with hook and loop and click fasteners.
intex challenger seat kayak
The seat can be individually adjusted with the straps on the backrest.

Finally, the footrest is inflated and placed in the bow of the boat and the skeg is attached. We consider the skeg in particular to be a very important feature. A skeg provides a much better directional stability, especially for inflatable kayaks.

inflatable kayak legroom intex challenger
A simple inflatable footrest is also included.
intex challenger k1 skeg
The skeg is mounted on the bottom of the boat.

The boat was completely assembled in 8 minutes. We have to admit that we had built up the Intex Challenger K2 before and therefore we are a bit familiar with the construction. Nevertheless we think that a setup of 10 to 15 minutes is possible without any problems.

With exact investigation of the boat, we notice immediately that the firmness of the tubes can’t really compete with high-quality inflatable kayaks. This was not to be expected otherwise, as the kayak has an operating pressure of only 0.069 bar. Higher quality inflatable kayaks have a much higher air pressure (e.g. Innova Twist or Advanced Elements AdvancedFrame). However, one cannot expect a higher operating pressure for the price. On the one hand, the air chambers would then have to be processed to a higher quality so that they can withstand a higher operating pressure. On the other hand, a higher air pressure in combination with the boat material wouldn’t be any good. In contrast, the low pressure prevents more or less this material more effective from any ground and stone contact because the thin skin can easier yield.

intex challenger inftalbale kayak review
The air chambers of the hose kayak are very soft due to the low operating pressure.

Besides the possibility to stow the luggage behind the seat in the stern, the kayak also has a luggage net on the bow. This gives a lot of space for additional luggage, which should be quickly at hand (e.g. shoes, water bottle, lunch box or dry bag). Behind the seat there is not too much space and of course it is also difficult to reach even while paddling. Therefore we like the large luggage net on the bow even more.

intex boat luggage
A lot of luggage can be stowed under the luggage net, which is quickly at hand during the paddling tour.

Review of the Intex Challenger K1 on the water

The air kayak has no handles. These are also not necessary. The boat is handy and light enough to be carried to the water. The canopy makes it a little more difficult to get in. However, the boat is stable in the water, so that capsizing is difficult.

air kayak intex challenger test
The kayak can be carried alone to the water without any problems.
challenger k1 paddling
The Intex Challenger K1 lies stable in the water.

The inflatable kayak is constructed so that the stern and bow are somewhat closed. This considerably reduces the ingress of spray water. But this has a disadvantage for tall people. In my case the Intex Challenger K1 is too small, because I am too tall for the boat (6.2 ft). In addition the canopy is very low dimensioned, so that one feels constricted. One should be at least smaller than 5.9 ft. Otherwise we recommend the Intex Challenger K2, which can also be paddled as a single kayak.

There's not much space for the legs.
intex challenger kayak interior
The interior in the bow is quite narrow.

The directional stabilityand manoeuvrability are acceptable. For such a short boat we also expect it to react quickly to changes of direction. The skeg is definitely a must-have for the kayak because it improved the performance on the water a lot. However, it can’t compete with other inflatable ones in terms of performance, for example the Advanved Elements AdvancedFrame.

Those who have no comparison with other kayaks will find the speed to be sufficient and pleasant. The Intex Challenger K1 is perfectly adequate for leisurely explorations on a calm lake. However, if you want to join other kayakers on a kayak trip and they are paddling high quality inflatable kayaks or even fixed hull kayaks, you will not have any fun with Challenger K1. Because the inflatable kayak is too slow for that.

It is quite remarkable that you can get a kayak for so little money.

We had tested the Intex Challenger K1 on a calm little lake. The conditions were ideal. That’s what the Challenger K1 is designed for. For long tours on big lakes or fast flowing rivers with possible ground contact we do not recommend the boat. The boat has too little material thickness and too little air pressure for such purposes.

The Intex Challenger K1 is suitable for leisurely paddling tours on calm waters.

Dismantling the Intex Challenger K1

The dismantling was quick and easy. Only the rest of the air has to be pressed out a little bit while folding up or taking care that there are no sharp objects on the floor that could damage it. Once the air is completely out, the boat and all its accessories will fit without any problems into the carrying bag.

The Intex Challenger K1 could be stowed again well into the bag.

Strengths and Weaknesses of the Intex Challenger Kayak

The biggest strength of the Challenger K1 is above all the very reasonable price with complete accessories. The biggest disadvantage for tall people is the small and narrow interior. So paddling is hardly possible or very uncomfortable. Also the material and the driving characteristics speak more for a boat to have fun on the water during ideal conditions on small lakes than a real inflatable kayak.

+ very cheap
+ all accessories already included
+ very practical luggage net on bow
+ integrated deck
+ attractive design

– small and cramped interior
– slow on water
– thin material
– low operating pressure
– more fun boat than inflatable kayak
– wobbly double paddles
– short warranty period of 90 days (from day of purchase)

Final notes on the Intex Challanger K1

For those who want to try paddling for themselves first, the Intex Challenger K1 is ideal. The inflatable kayak is the only 1-person kayak for beginners on the market. It is particularly suitable for small paddling trips on calm waters. The boat is offered in a complete set with very useful accessories, such as the skeg, and enables an immediate start into paddling pleasure.

You should not compare the Challenger K1 with a fixed hull kayak, not even with a higher quality inflatable kayak. If you’re already sure you want to make several paddling trips in the season or don’t want to restrict yourself to calm waters, you should buy a higher quality boat. The purchase price is higher, but the differences in terms of handling characteristics and quality are enormous.

Recommended Kayaking Equipment

The Intex Challenger K1 already includes a paddle and pump. However, you definitely need to get a life jacket. You also want to consider a dry bag and a proper transport bag for the inflatable kayak.

Life Jacket

Life jackets should always be used when paddling, no matter how well you can swim and how nice the weather is. Large and flowing waters can be unpredictable, and your own clothing can make it difficult to swim if you capsize. A life jacket also gives you the buoyancy you need to get back to the surface quickly. It can also be very helpful to bring the capsized boat to shore. When buying a lifejacket, buoyancy should be chosen according to your body weight.

Dry Bag

A dry bag should not be missing on any paddling trip. Dry bags are available in many different sizes. As a beginner and for smaller trips we recommend a small and compact bag. It offers enough space for valuables like your mobile phone and wallet and protects them from loss or damage. A small packsack does not take up too much space in the boat and can also be placed between your legs if necessary. Make sure that the dry bag  has a strap so that you can easily carry it around when leaving your kayak.


Many inflatable kayaks come without any backpack, but only with a light carry bag. This is perfeect for storage or to transport if on short distances. But if you want to take your inflatable kayak with you on public transport or carry it without any bid efforts, we strongly recommend a comfortable and large transport backpack. Normal hiking backpacks are not suitable for this because of their small opening. Sevylor offers an additional backpack designed for the transport of inflatable boats. A large opening makes it easy to put the boat inside the backpack. The outer pockets are the perfect place for the paddles.

Other Intex kayaks

Intex has other inflatable kayaks, which could be interesting if you are looking for an entry-level inflatable. But same here, the kayaks are designed for short tours on calm water. There are no big differences between the Challenger K1 and K2. The Intex Challenger K2 is a tandem kayak and can also be paddle as a solo kayak. You are a bit faster with it since it’s longer. The Intex Explorer K2 looks quite different but it’s quite similar with the K2. We have compared both kayaks and you can find out the differences in our Intex Challenger vs. Explorer article.

The Intex Excursion Pro is more solid and the material of the boat skin thicker. However, it’s also the most expensive Intex kayak.

Intex Excursion Pro

2 persons kayak

Intex Challenger K2

2 persons kayak

Intex Challenger K2

1 person kayak

Alternatives to Intex kayaks

Intex isn’t the only brand for inflatable kayaks. Two other well-known brands are Sea Eagle and Advanced Elements. Both have quite a big range of inflatables. Sea Eagle has also some entry-level models like the Sea Eagle 330, which is an interesting alternative to the Intex Challenger K1

We also like inflatables from Advanced Elements. Compared to Intex kayak that’s a complete different level of quality. The boat skin is really robust and they have a very good performance on the water. The AdvancedFramce Convertible is a bestseller. It can be paddled as a tandem and as a solo kayak. The Elite version comes with a drop-stitch floor, which increases again the performance on the water. The smaller AdvancedFrame is a 1-person kayak and comes already with an integrated deck. We have already paddled both kayaks on countless tours and for us they are one of the best inflatables on the market.

Sea Eagle 330

1 person kayak

AE AdvancedFrame

1 person kayak

AE AdvancedFrame Convertible

2 persons kayak

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