Four SEA Games Golds and the Data Gap in Vietnamese Women's Athletics

Late in May, I sat in the third row of a provincial stadium, waiting for the women's 3000m steeplechase. I counted four spectators. A hand-held stopwatch in the official's palm. No electronic board, no per-lap splits, nobody recording the rhythm over each barrier. When the youngest runner in the field crossed the line, I asked her how many seconds her final lap had taken. She shook her head. The coach standing beside her shook his head too. Nobody knew.

Two years earlier, in Phnom Penh, Nguyễn Thị Oanh crossed the line in the last of the four events she entered at SEA Games 32. The stands were packed that day, phones pointed at the track. Yet back home, the simplest question still has no answer: in the decisive lap, from which metre did she begin to accelerate?

"Forty-five minutes on the sideline, a lifetime that never grows old." I have written that line many times, and each time it becomes a little truer. Most of the story of Vietnamese women's athletics does not live in the medal moment; it lives in everything around it. Most of that is never recorded.

Vietnamese women's athletics carries a decade of medals on its shoulders, yet carries almost no data system alongside them.

For roughly the past decade, at every SEA Games, the gold medals of Vietnamese athletics have come mostly from the women. Nguyễn Thị Huyền in the 400m and 400m hurdles. Bùi Thị Thu Thảo in the long jump. Nguyễn Thị Oanh in the middle and long distances. The pattern has repeated long enough to become a habit in how results are read: when the Games come round, the women carry most of the quota.

At SEA Games 31, held in Hà Nội in May 2026, Nguyễn Thị Oanh won three gold medals. A year later, at SEA Games 32 in Phnom Penh, she won four, and Vietnam topped the overall medal table. Those are results everyone remembers. What few remember is how we store them.

At SEA Games 31 on the Mỹ Đình track, there were home spectators in the stands, and Vietnamese women's athletics competed in front of family, schoolchildren, and the people who had coached them since they were thirteen. It was one of the rare Games where the sport lived inside the atmosphere of a major event. Even then, what was kept most was the celebration footage, not the data sheets.

From my own years of watching domestic athletics meets, what recurs at almost every one is the absence of measurement infrastructure. A 1500m race with no per-lap splits. A long jump with no approach-speed reading. A shot put with no release-angle data. The final result is taken on a hand-held stopwatch, with error measured in tenths of a second, then typed up as a single line in a summary sheet sent to the federation.

In athletics, per-lap splits are not a minor detail. They are the entire tactical story. They show whether an athlete started fast or slow, how she held her rhythm, where she accelerated, and why she won or lost. A 5000m race without splits is like a football match that records only the score and none of the play. You know the result, but you learn nothing to pass on to the next runner.

"Looking at the scoreboard, I learned to read what is not written down." I wrote that line about football, but it holds truer in athletics. In football there is at least footage to rewind. At a provincial athletics meet, sometimes nobody is even filming.

The most famous day of Nguyễn Thị Oanh's SEA Games 32 was the one on which she ran two events. First the 1500m. A few hours later she returned to the track for the 3000m steeplechase. She won both. It is the kind of performance any sports system would want to record in full detail, because it is close to physiologically unthinkable.

Those two events demand two different energy systems. The 1500m is a race near threshold, where recovery between efforts is a matter of survival. The 3000m steeplechase adds a technical layer: clearing barriers, crossing the water jump, holding cadence on landing. Running both on one day goes beyond the question of fitness. It is about managing lactic acid, managing rest, and managing tactical decisions in a body that has not fully recovered.

Without data, we cannot answer the most interesting questions. How economically did Oanh run the 1500m to save herself for the next event? Did she accelerate over the final 300m or the final 150m? Did she change rhythm after each water jump? These are the things a young coach in Bắc Giang or Cần Thơ needs answered, rather than only the celebration clip.

In football I once wrote that the five-substitution rule deepens a squad but also turns the final twenty minutes into a war of attrition, where the team with the deeper bench beats the team with the better ideas. Athletics has no substitutions. An athlete entered in four events has placed herself under the obligation to carry all four. There, squad depth is not measured by the number of people on the bench, but by the number of athletes good enough to share the load.

Vietnam has Nguyễn Thị Oanh. Vietnam does not yet have many Nguyễn Thị Oanh. And this is where medal data obscures human data. A country that wins four golds from one athlete looks very strong on the medal table. Look at depth instead and the picture changes. A squad with ten athletes all meeting the standard across four events is a fundamentally different thing from a squad with one outstanding athlete and three others simply filling places.

In the region, Thailand has long been the athletics power of Southeast Asia, with a connected school and university system. The Philippines has a tradition in sprints and hurdles. Vietnam has risen in the middle distances, the long distances, and the technical events. Each country is strong in its own patch. But ask which one can answer the question "how did our athlete actually run", and the answer is not on the medal table.

At grassroots level the problem is clearer still. I have sat in district stadiums where one coach is responsible for thirty children, with no measuring equipment, no software, and a notebook for results. When a child improves, nobody knows why: whether it came from training volume, technique, or puberty. Without that answer, deciding whom to invest in next becomes a judgement by feel.

"When the stadium is empty, ordinary voices suddenly become leaders." The coach at that district ground is one such leader. But a leader without data can only transmit inspiration, not method.

"In the stands of Russia, I heard many empty seats named after women." I wrote that line after the 2026 World Cup, when I realised the absence of women in sport happens in two places: where they compete, and where people write about them. Vietnamese women's athletics is in exactly that condition. They are present on the track. They are absent from the data.

The common way of telling the story of Vietnamese women's athletics stops at the medal. A gold, a record, a photograph. That telling is easy, and it sells. But it places all the value in the moment, and leaves the rest blank.

There is a paradox here. The commercial value of this sport attaches to the medal moment. Its competitive value attaches to the long process behind it. When a whole sporting system invests only in the moment, it produces stars without producing a system capable of producing the next star. That is why I do not trust reading results by medals alone. It gives the feeling of winning, while what is thinning out is the foundation.

I also think of another habit: demanding that an athlete "prove herself" on her first return from injury. In athletics, where the body is the entire instrument, that pressure is especially cruel. Someone just back from injury does not need another public examination. She needs a competition schedule designed to bring her back at the right moment, and a record-keeping system good enough to know when that moment is.

Missing data produces very concrete consequences. A coach cannot compare an athlete with her own previous season. A journalist like me cannot write accurately about tactics, and is forced into emotional storytelling rather than technical storytelling. A federation has no evidence base for allocating resources, so resources flow toward names already famous, rather than toward indicators already improving.

In recent years, some foreign experts have been invited to support the national teams. They bring method, but method only takes root when there is local data to check it against. When the contract ends, most of the knowledge leaves with them, because no database stays behind for a successor to continue.

The relay events show this most clearly. A women's 4x400m team can win or lose on every baton exchange, and split times are the single most important data for improvement. Yet at most domestic meets, nobody measures the splits. The coach has only a feeling: this leg looked slower than that one.

On the media side, we too contribute to the gap. A piece about a medal can reach the front page. A piece about per-lap splits is hard to sell. But if the writer does not demand data, the administrator has no incentive to collect it.

I remember a girl who ran the 800m at a youth meet, who asked me afterwards how she could know whether she was improving. I had no good answer. She had run faster than the year before, but nobody had kept enough to tell her where on the lap she had got faster.

What is changing, slowly but genuinely, is the recognition that a medal only keeps its lasting value if people still remember how it was made. A few training centres have begun to keep records more systematically. A few meets have adopted electronic timing. Those steps are small, but they point in the right direction, and they come from people willing to sit down after competition to write the last number in.

If at the next SEA Games a Vietnamese woman again crosses the line first, I hope the first thing we do is not to count medals, but to save the per-lap splits. Because a contract has an expiry date, but a human story does not. And a story only lives when it is written down — in enough detail for those who come after to learn from it.