Vietnamese Athletics: The Data Gap Behind Every Medal

At the final heat of the women's 100m at a national athletics meet, I stood behind lane 6 with a yellowed notebook. The electronic board flashed a number: 11.68. The stands applauded. The girl bent over her knees and breathed. I turned to the technical official and asked for the wind reading. He shook his head: the anemometer was broken, and anyway the wind was not strong today. Not strong today was a judgement made by skin, by hair, by the feel of the air on a face. And so another number entered the record sheet, carrying a blank space nobody wrote down.

I keep the habit of noting such blank spaces. Not to catch anyone out. After twenty-eight years at the edge of the track, I have learned that the troubling thing is never a bad result. The troubling thing is a result with no annotation.

Athletics is the sport where the result and the meaning of the result are recorded by two different things. The result is the number on the board. The meaning is the whole apparatus of annotation around it: wind reading, reaction time, splits, altitude, track surface, temperature, and the shoes the athlete wore.

World Athletics, the sport's governing body, has built a coordinate system to place every number in its proper place: world record, Olympic record, continental record, national record, world lead, Olympic entry standard, ranking points. In track and jump events a mark counts as a record only when measured wind velocity does not exceed 2.0 metres per second. Above that threshold the number is still beautiful and still written into the record sheet, but it is pushed into another drawer: wind-assisted. Outsiders never see that drawer. They only see the number.

More than once I have watched a coach explain to a pupil's parents that this mark does not count as a record because of the wind. That conversation is never easy. To the family of a seventeen-year-old girl who has just run faster than anyone in her district, wind is an abstract word.

In Vietnam that annotation is usually missing. Not simply because we are lazy. The domestic competition system still runs largely on modest means: hand timing at many provincial meets, anemometers absent or broken, no split times, no reaction times, no photo-finish cameras. Results from such meets reach the press as a single line: name, province, mark. The line is accurate. It is also naked.

SEA Games 31, held in Hanoi from 12 to 23 May 2026, was a memorable exception. My Dinh National Stadium was fitted with synchronised electronic timing, photo finish and wind measurement. For the first time in years, Vietnamese athletics was measured properly. But when the closing ceremony ended, most of that data dissolved with the floodlights. No public database retained the splits of the athletes who competed there. To check anything, you must open the video, re-time it by hand, or call the coach.

A domestic athletics result usually travels through three stages in a single day. It leaves the organisers' record sheet in handwriting. It becomes a line of news. Then it becomes a social media post, where the number is detached from every condition and given an adjective. Within twenty-four hours the reader receives a figure and a feeling. The feeling stays. The figure, along with the conditions that produced it, usually disappears first.

That is the starting point for everything below.

Wind heads the list of forgotten variables. A gust of 2.1 metres per second down the straight can cost a female 100m runner roughly a tenth of a second, while four years of training sometimes buys only two tenths. Altitude works the other way: thinner air, less drag, so highland tracks tend to produce numbers that cannot be repeated elsewhere. The track surface determines the rebound of every stride.

And shoes have dictated much of the story of the past decade. In 2026 World Athletics capped road-racing sole thickness at 40mm and allowed at most one rigid plate. The rule arrived after a run of marks suspected of being the product of technology rather than people, so much so that the media called it technological doping. I raise this not to open a debate about shoes. I raise it to show that even the world, fully equipped with data, must keep redefining what a clean performance is.

A timestamp becomes knowledge only when we know the conditions under which it was produced. That is the sentence I remind myself of every time I raise the camera, and the sentence I give to young people entering the trade.

Nguyen Thi Oanh is the clearest illustration of what data can say and cannot say. At SEA Games 31 she won three gold medals in three events that are physiologically distinct: 1,500m, 5,000m and 3,000m steeplechase. All three fell within a short span, meaning her body had to recover faster than that of an athlete specialising in one event. The remarkable thing is not the medal count. It is how she distributed her effort across laps inside each race.

But this is where the gap shows. No official split sheet records her first 400m and last 400m in the 1,500m. Anyone wanting to analyse Nguyen Thi Oanh's rhythm must open the video, watch frame by frame, and time it by hand. That method does not produce data. It produces an informed guess. At any Diamond League meeting, those figures are published within minutes of the finish.

Bui Thi Thu Thao, with her gold in the women's long jump at the 2026 Asian Games, is another case. At a continental meet the runway has wind measurement, so her decisive attempt exists with full annotation. But most of the best jumps of her career took place at domestic meets where nobody measured the wind. That means most of the competitive life of a continental champion passed without leaving data behind. It is a loss that is hard to see. Nobody lost a medal. We lost the ability to understand why she jumped the way she did.

The women's 400m hurdles, where Quach Thi Lan once won silver at the 2026 Asian Games, is the most split-dependent event in the entire sport. A hurdler must clear ten barriers, and the smallest error of rhythm at hurdle six will surface at hurdle nine. Analysing this event without hundredth-of-a-second splits is merely retelling. The viewer sees her accelerate at the end. The analyst wants to know how long she held her rhythm, and where she lost it.

The data on athlete condition is the same. The year-by-year personal best curve is the most basic tool for knowing whether someone is rising, peaking or declining. In Vietnam no public database holds each athlete's best mark year by year. Coaches keep them in private notebooks. And when the coach stops, the notebook usually stops too.

The peak zone of a career differs by event. Sprinters usually peak between twenty-two and twenty-seven. Middle-distance runners peak somewhat later. Marathon runners peak later still, sometimes into their early thirties. Throws and jumps have the widest peak, extending past thirty. Those windows mean nothing unless set beside a continuous performance curve. Without the curve, all you have is age, and age says nothing.

Another test also requires data: the abnormal explosion. When an athlete suddenly improves a personal best at an age past the peak, any serious analyst must ask a question. Not to accuse. To exclude. Where data is complete, that question is answered by the athlete's biological passport, by testing history, by a chain of marks built over years. Where there is no data, the question offers only two options: ignore it, or speculate. Both are unfair to the athlete.

The competition structure of Vietnamese athletics also produces a distorted kind of data. Most domestic athletes treat the SEA Games as the peak of their two-year cycle, because that is the arena where they have a genuine chance of a medal. To enter the Olympics or a world championship, they must either meet an entry standard or accumulate enough international ranking points. Both routes demand a dense overseas competition schedule that most cannot afford to pursue. The result is that the international record of a Vietnamese track and field athlete often contains only a few lines, years apart. A few lines cannot build a curve. They can only tell a story.

The regional picture is blurred for the same reason. Thailand has recently produced a teenage sprinter who won the men's 100m at SEA Games 31 at the age of sixteen, a sign that their youth system delivers athletes earlier. The Philippines has a pole vaulter of continental calibre. Indonesia and Malaysia are strong in throws and short sprints. Vietnam is strong in women's middle and long distance, in the 400m hurdles, in the long jump. But I cannot state with confidence how many Vietnamese women currently run 100m under 12 seconds. Nobody publishes that figure. In athletics, a nation's depth in an event is measured by how many athletes cross a performance threshold, not by how many medals they win. We count medals because medals are the only thing that gets counted.

On rules and anti-doping, the international framework is clear and Vietnam is part of it. The World Anti-Doping Agency operates athlete biological passports, tracking blood and urine markers over time to detect abnormal change. Athletes in the testing pool must file whereabouts daily for out-of-competition testing; three missed tests in twelve months constitute a violation even when no prohibited substance is present in a sample. There is also the reallocation mechanism: a medal can change hands years later, when a higher finisher is found to have violated the rules.

My point is not the regulations. It is the space behind them. The absence of sanctions does not mean the absence of a problem. Sometimes it only means nobody has looked hard enough. A track and field system with no notable violation for years may be a clean one. It may also be one that has never been examined. Distinguishing between those two possibilities requires data, and the data is not there.

The coaching system also operates in ways that are hard to measure. Most Vietnamese track and field athletes come up through provincial sports centres, where one coach may be responsible for a dozen athletes across three or four different events. They also drive them, feed them, and are sometimes the only person in an athlete's life who ever said they could go far. Short overseas training camps are the exception, not the rule. In such conditions, assessing the quality of training plans or the soundness of periodisation is nearly impossible from the outside. Outsiders see only the final result, and a final result always has two explanations.

Risk in athletics falls into fairly clear groups. For sprinters, hamstrings and Achilles tendons. For jumpers, ankles and knees. For distance runners, bone and overuse injuries. On top of that are purely technical risks: a false start in the sprints leading to disqualification, a foot over the board in the jumps, a loss of contact in race walking, and a dropped baton in the relays, one mistake that can erase four years of preparation for four people in an instant. All of these can be assessed if injury records and competition calendars exist. We usually have both, scattered across the memories of the people involved.

The value chain behind an athlete is similar. Upstream is the school system and provincial sports festivals, where fast children are spotted. In the middle are the athletes and the training centres. Downstream is television, sponsorship and the market. Vietnamese athletics has a fairly wide upstream, but the joint between upstream and everything else is narrow. Many children stop at fifteen or seventeen, when a family must choose between a secure vocational place and a place in the provincial sports team on an income nobody dares to promise. Those who continue are usually decided by a teacher rather than by a system.

On the market side, domestic athletics has almost no regular television coverage. No coverage means no major sponsors. No sponsors means no money for measuring equipment. No measuring equipment means no data. And data, in turn, is what makes an event compelling to watch. The circle closes and feeds itself on its own poverty.

This is where I want to say what I believe, even if it is not easy to hear.

The prevailing view is that Vietnam lacks technology. Buy anemometers, buy electronic timing, buy software, hire experts, and the problem is solved. I have sat in meetings that discussed exactly this, and I have always sensed something wrong.

Equipment can be bought in a single season. What cannot be bought is the habit of watching one person for eight years. The strongest athletics nations are not strong because their anemometers are better. They are strong because thousands of people patiently follow thousands of athletes over many years, record every small change, and pass those records down through generations of coaches. Equipment only makes that patience cheaper. Without patience, equipment is an expensive object sitting in a technical room.

I know one more thing, and it is the reverse side of the data void. When nobody measures, non-standard paths still have room to exist. The person who trains alone in a way nobody taught. The person who runs on a beach every morning. The person who joins the national team at twenty-five, an age that optimisation models usually strike out. In densely measured systems, those people are eliminated early by a comparison table. In Vietnam, they occasionally slip through. That is an opening, and I am grateful for it.

But I must say it plainly: an advantage you did not choose is not an advantage. It is luck. And luck is not a system. It does not hand medals to one generation and then to the next. It merely falls somewhere, a few times in a few decades.

A record is only a shadow; the person is the track. I still believe that after nearly thirty years. But I also understand that a shadow has a function: it tells us that someone is standing in front of a light source. A number without annotation is a shadow cut away from the person who cast it. It is beautiful, it is printed in newspapers, it is mentioned at year-end reviews. Then it vanishes from every conversation, including the conversations about itself.

There are athletes who never reach the finish line, yet keep running in my memory. One of them is a girl I met in a central province, eighteen years old, who left athletics to take a job. No medals. No mark good enough for anyone to remember. But her old coach still keeps a notebook recording her trial runs over four years. He told me: this is good for nothing, but I cannot throw it away. That notebook is the only data left about a runner who has nothing on the results board. And in a sense, it is the most complete data I have ever been shown.

I learned to listen from late-night phone calls, when athletes say what they dare not say in daylight. In those calls they rarely talk about results. They talk about injuries nobody knows about, about money they had to borrow, about family members who stopped believing. If I wrote only from the results board, I would never know those things exist. But if I wrote only those things without data, I would turn them into symbols. And a symbol is also a form of neglect.

Athletics and human life share one thing: everyone has a finish line, but few run the right course. Those who write about athletics are the same. We often run the right distance on the wrong course, present where there are medals and absent where there is data.

If tomorrow I could decide one small thing for this sport, I would not ask for another overseas training slot. I would ask for a rule: every athletics result published to the public must carry the conditions that produced it, including wind reading, splits, track surface and reaction time where available. One extra line beside each result. Just one line. And an open database that keeps everything, deletes nothing, including the bad runs.

That does not require a large budget. It requires a habit. And a habit, like everything human, takes longer to form than we think.

This afternoon, at some meet somewhere, another girl will finish running and look up at the board. Beside her number there will be a blank space. What I want to know is not whether she ran fast or slow. What I want to know is whether, next time, that blank space will be filled by someone who stayed behind, wrote it down, and remembered her for longer than a single evening.