Splutí skončí u výstupního místa.

Splutí is a noun, not a verb. It means something like a river descent, a float trip, or going down a river by boat/raft/canoe.

It comes from the verb splout / splouvat and names the activity itself. In this sentence, splutí is the subject:

Splutí skončí... = The float trip / river descent will end...

This kind of noun is very common in Czech: a verb can become a noun naming the action.

Because skončí comes from the perfective verb skončit.

In Czech, the present-tense forms of a perfective verb usually refer to the future:

• skončí = will end
• not usually ends in a simple present sense

This is one of the most important differences from English. Czech often uses:

• imperfective present for ongoing/habitual present
• perfective present form for future completion

So:

• končí = is ending / ends (from imperfective končit)
• skončí = will end / will finish (from perfective skončit)

Czech does not have articles like a or the.

So Splutí skončí u výstupního místa can be understood as:

• The float trip will end at the take-out point
• or, depending on context, A float trip will end at a take-out point

In real usage, context tells you whether something is definite or indefinite. In a sentence like this, especially in instructions or route descriptions, English will often use the even though Czech does not mark it directly.

Because the preposition u requires the genitive case.

The basic dictionary form is:

• výstupní místo = take-out point / exit point

After u, both words change to genitive singular:

• výstupní místo → u výstupního místa

So:

• místo → místa
• výstupní → výstupního

This is normal adjective-noun agreement in Czech: the adjective has to match the noun in case, number, and gender.

Not exactly. U literally means something like by, near, or at.

So u výstupního místa is literally closer to:

• by the take-out point
• near the take-out point

But in many practical contexts, English naturally translates it as at the take-out point.

So the Czech wording may feel slightly more spatially flexible than English at, but the intended meaning is basically the same here.

Literally, výstupní místo means exit place or getting-out place.

In the context of boating, rafting, or canoeing, it means the place where people get out of the boat or leave the water route. A very natural English equivalent is:

• take-out point
• landing point
• exit point

So this is a practical, route-description kind of expression.

Yes. Czech word order is more flexible than English word order.

The sentence as given:

Splutí skončí u výstupního místa.

is a neutral, straightforward order.

But you could also say:

• U výstupního místa skončí splutí.

This would put more emphasis on where it ends.

Even though the word order can change, the case endings still show the grammatical relationships, so Czech does not rely on word order as heavily as English does.

You know mainly from meaning and sentence structure.

In Splutí skončí u výstupního místa:

• splutí is the thing that ends
• skončí is the verb
• u výstupního místa is a prepositional phrase telling you where

So the structure is:

subject + verb + place expression

Even though Czech allows flexible word order, this version is very easy to read as: The float trip will end at the take-out point.