Marrit Steenbergen Sets New European Record With 50.32 100 Freestyle: The Mechanism of a Closing Surge

I used to think that records in short-course swimming were written by explosive speed in the first 25 metres. Marrit Steenbergen just showed me the opposite, and she did not need my agreement to do it. When her hand touched the wall in the final lane, the electronic board lit up with 50.32. That is a new European Record in the women's 100m freestyle, short course, 25-metre pool. The previous record of 50.42 seconds — also set by her — was erased by exactly one-tenth of a second. A tenth of a second sounds small, but at the elite level it is the distance between being named and being forgotten. In an event where the entire race lasts less than a minute, everything is measured in fragments of time so small they feel absurd. And it is precisely in those fragments that we see most clearly what an athlete's body is doing. There are records that do not live in speed but in the way we look at them. This is one of those. It was not written at the start with a perfect push-off, nor with stroke rates so fast that rivals could only watch. It was written at the finish. And that is what makes it far more interesting than it first appears. I sat with the split data for a long time. There is a line I keep in my notebook: numbers are dry bones; context is what makes the blood flow. So before concluding anything, I had to rebuild the context first. Short course, meaning a 25-metre pool, is a completely different game from the 50-metre long course. In a short-course 100m freestyle, a single race contains three turns. Three turns across a distance whose total time is under a minute means that turning technique and push-off carry an enormous share of the final result. In long course, a 100m race has only one turn. In short course, there are three. That difference sounds purely technical, but it reshapes an athlete's entire profile. Those who excel in short course tend to have near-perfect turning, strong underwater carry, and the ability to accelerate over very short distances. That also means a short-course record does not automatically become a long-course record. This is the point I will return to later, because it is the biggest blind spot in any record-breaking headline. Marrit Steenbergen is a Dutch swimmer from a system whose tradition has produced some of Europe's biggest names. She emerged as a versatile athlete: freestyle, individual medley, and butterfly. That versatility matters more than it appears. An individual medley swimmer must master all four strokes, meaning their physical and technical base is far broader than a pure speed specialist's. When such a swimmer enters a pure speed event like the 100m freestyle, they bring something else: the ability to distribute energy. That is why I was not surprised that this record came from the closing half rather than the start. A versatile swimmer understands that speed is not everything. They understand that a 100-metre race is a problem of allocation, not a pure sprint. This is the core. Look at the two decisive numbers: 24.37 and 25.95. Steenbergen's first 50 was 24.37 seconds. Her last 50 was 25.95 seconds. The first thing to note: this is a positive split, meaning the first half was faster than the second. For a 100-metre race, this is entirely normal, even desirable. An athlete who tries to go out slower and come home faster usually pays for it by fading at the end. The second, and more important point: compared with her own previous record swim, Steenbergen went out slower. Last time, in Poland, she swam the first 50 in 24.33 seconds. This time, only 24.37. Slower by 0.04 seconds. But the last 50 was different entirely. She came home in 25.95 seconds — the first time she dipped under 26 seconds in the closing half of a short-course 100m freestyle. This is the standout technical marker of the entire race. Let me explain why. In short course, the final 50 is not just 50 metres of swimming. It includes a turn plus the touch. That means 25.95 does not only measure stroke speed; it also measures turning technique, the ability to carry momentum after the push-off, and the precision of the final wall touch. In other words, the 0.10-second improvement did not come from swimming faster at the front. It came from the back. She made up the slower opening, and then some, with speed and technique at the finish. This is where I want to pause longer, because it is the line between analysis and reporting. When an athlete improves by swimming the first half faster, that signals training focused on explosive speed, start reaction, and push-off power. When an athlete improves by swimming the second half faster, that signals training focused on speed endurance, turning technique, and holding form under fatigue. Steenbergen's case is the second type. She did not accelerate at the front — she was even slower. She accelerated at the back. This points to a deliberate training block targeting the finish, not an accidental surge. And this is what I admire in a mature swimmer: they do not try to win by brute force. They win by understanding how their body distributes energy, then optimising where that energy lands. The near-balanced structure between the two halves — 24.37 and 25.95, a gap of 1.58 seconds — is also a signal. It shows Steenbergen did not swim recklessly and fade. She swam with control. She knew how much energy she had and how she was dividing it. The sub-26 closing 50 deserves its own examination. In a short-course 100m freestyle, holding the back half under 26 seconds is the boundary between the fast group and the very fast group. When an athlete crosses that boundary while having swum a relatively quick first half, it signals a particularly strong speed-endurance base. What is notable is that she achieved this without pushing the first half to its maximum. Had she gone out faster, she might not have held the back half under 26. This was a deliberate trade-off, and she chose the right side of it. In terms of energy systems, a 100m freestyle is a battle between the phosphagen system (immediate explosive energy) and the glycolytic system (energy for sustained high-intensity effort). In short course, with three turns creating brief technical respites, the balance between these systems can be optimised differently than in long course. An athlete who finishes strongly in short course is usually one who has trained the glycolytic system carefully. They can sustain high speed for longer than someone relying only on the phosphagen system. That is exactly what the 25.95 closing split reflects. The Dutch swimming tradition has a characteristic: it values technique and efficiency over raw power. This stems from a sporting culture where swimming is part of daily life, where children learn to swim before they learn to read. The result is a generation of athletes with an exceptional technical base. When you combine that technical base with a versatile athlete, you get someone who handles turns and touches almost automatically. And in a sport where 0.01 seconds decides the ranking, that automation is an advantage that cannot be measured in a single number. Now to the part headlines usually skip. This is a short-course record. It is not a long-course record. And the two do not convert linearly. In short course, there are three turns in 100 metres. In long course, only one. The three turns together generate a technical dividend that a strong turner can collect. Switch to long course, and that dividend disappears. Pure stroke speed becomes the deciding factor. This means a 50.32 in short course does not guarantee an equivalent long-course performance. It does not even guarantee Steenbergen will be the fastest in a long-course race. This is an important inference I must stress, because many will read 50.32 and quietly assume it applies to every format. I am not saying this to diminish the record. I am saying it to place it correctly. A short-course record is a real achievement, and it measures real qualities: turning technique, underwater carry, speed endurance over short distances. But it measures a different set of qualities than long course. This is one of the most common traps in sports media: taking a number from one format and assigning it meaning in another. I once fell into this trap. I once believed I was right after reading a public medical report and drawing a hasty conclusion. The body does not need my agreement. It is only good where it has been trained, not where I want it to be good. There is one thing I must make clear, and it concerns how I work. The analysis I based this article on has a feature: it names no source. No outlet, no specific dates for most data. Every data point is flagged as pending verification. That does not mean the data is wrong. It means the data is incomplete. And in my work, the difference between unverified and wrong is enormous. Look at what we have and what we lack. We have: the two halves (24.37 and 25.95), the old record (50.42), the new record (50.32), and the all-time ranking. We lack: start reaction time, stroke rate, distance per stroke, and split times for each turn. That gap matters. Without stroke rate, we cannot know whether Steenbergen swam faster at the back by increasing stroke rate (swimming quicker) or by holding rate and increasing propulsion (swimming stronger). These are different mechanisms, and they lead to different training conclusions. Similarly, without reaction time, we cannot rule out that part of the record came from a better start. She swam the first 50 slower in time, but that time includes the start. If her reaction was faster, her pure swimming speed at the front could be even slower than we think. The mechanism behind the number still has an unfilled gap. That is why I write with a certain attitude: I present what the data allows me to conclude, and I clearly mark what it does not. That is not hesitation. That is discipline. Placing this record in the all-time list reveals an interesting picture. Steenbergen is the fourth-fastest performer ever in the women's short-course 100m freestyle. She is exactly 0.01 seconds behind the third-fastest — Gretchen Walsh. One hundredth of a second. That 0.01-second gap is one of the most fascinating things about elite swimming. At that distance, the result is no longer decided by fitness or technique. It is decided by things that cannot be trained directly: the timing of the touch, the tension of the hand at contact, a bit of luck in the push-off. But I must be careful here too. The all-time list I have does not state the current world record. The source analysis says the world record is believed to be faster than 50.31, but the exact number is pending verification. This means I cannot state Steenbergen's exact position in the global context. I can only state that she is in the absolute leading group. And in my work, the difference between leading and fourth is the difference between an inference and a guess. To grasp the full meaning of this record, place it in the short-course calendar. Short course has its own season, usually centred on the end of the calendar year, with continental and world championships. It is the phase when athletes shift from a long-course base to short-course optimisation. Steenbergen setting a record in this phase shows she has had a dedicated short-course training block. This was not an accidental performance. It was the result of a directed preparation process. In swimming there is no transfer window like football, but there is a strategic equivalent: choosing which meet to peak for. An athlete cannot peak at every meet. They must choose. And Steenbergen choosing to shine at a short-course meet says something about how she and her team read the season. I remember the time I spent reviewing hundreds of races to build my database. I learned one thing: peak performance does not come from trying harder. It comes from understanding better. An athlete who understands their body knows when to push, when to hold, and when to save for the finish. That is exactly what I see in this 50.32 swim. So what does this record mean for Steenbergen's career? It confirms something important: she is not only a good versatile athlete, but a leading continental short-course specialist. In a sport of increasing specialisation, owning an event where you are the leader is a strategic asset. But it also raises a question. If Steenbergen can optimise her finish in short course, can she transfer that mechanism to long course? The answer is not in the data I have today. In long course, the problem is different. There are no three turns to compensate. Pure stroke speed matters more. Speed endurance over a longer distance becomes decisive. An athlete can dominate short course without dominating long course, and vice versa. Swimming history is full of such cases. What I take away from this race is not the number 50.32. It is the question: if she can improve through the finish in short course, what happens when she applies the same mechanism to long course? The answer is not in the data I have today. It lies in the races to come. And perhaps that is what makes this sport worth following: every lane is a story the body is trying to tell us, and we can only hear it when we stay a little longer with the numbers.