Vietnam Swimming After the Anh Vien Era: New Waters and the Upstream Race

On May 8, 2026, at the Morodok Techo Aquatic Center in Cambodia, Tran Hung Nguyen touched the wall in the 400m individual medley with a time of 4 minutes 23.25 seconds. He looked up at the scoreboard, then slapped the water. That moment was not just his third SEA Games gold medal – it was the first signal that Vietnam swimming was revealing a generation that knows how to swim upstream.

The stands that day were sparser than any SEA Games I have covered. The clapping came from the Vietnamese coaching area, where the coaches had stood all afternoon watching every breath of their athletes. As Hung Nguyen stepped onto the podium, I noticed something unusual: his eyes were not fixed on the flag being raised, but looking down at the empty seats across the pool. Perhaps he was looking for a familiar figure – the one who built the most glorious era of Vietnamese swimming but was no longer there.

Nguyen Thi Anh Vien retired from elite competition in 2026, closing a 15-year chapter with 25 SEA Games gold medals. Her departure left a vacuum not just in the record table, but in the entire training ecosystem that had grown accustomed to relying on one exceptional individual. Over three decades, Vietnamese swimming has seen similar cycles: a talent emerges, shines, then quietly leaves – taking the investment resources with her.

The question I carried back from Cambodia to Hanoi was not how many more golds Hung Nguyen can win, but whether the training system is brave enough to escape the shadow of past eras. Because if we only chase the results of a few individuals, we will forever run in circles around the old orbit.

This article is an attempt to read the journey of Vietnamese swimming through a lens of technique, data, and human stories – the way I have worked over 14 years covering races across Southeast Asia.

Vietnamese swimming does not lack milestones. In 2026, Anh Vien shocked the region by winning 8 gold medals at the SEA Games 28 in Singapore, breaking 8 games records. That achievement earned respect from even developed swimming nations like Singapore and Thailand. But after every SEA Games, the recurring question remains: are we building a system or simply nurturing a star?

The answer lies in the investment structure. For over a decade, nearly all resources of the national swimming team were poured into key athletes, with Anh Vien at the center. This approach produces fast results, but when the star leaves, the system is hollow. At SEA Games 31 (2026, held in Vietnam), when Anh Vien competed only intermittently due to injury, the swimming team still won 11 golds – but most came from veterans like Nguyen Huy Hoang and Hoang Quy Phuoc. By SEA Games 32 in Cambodia, when these athletes aged and Anh Vien was gone, the swimming gold count dropped to 4. From 11 to 4 is a simple subtraction, but behind it lies the story of a system that has not yet learned to regenerate.

There are races not measured by the clock, but by the silence between two breaths. For Vietnamese swimming, that silence began the day Anh Vien said goodbye.

Looking at Tran Hung Nguyen's SEA Games 32 results – 3 golds in the 200m, 400m IM and 200m butterfly – many would think the next generation is ready. But I remain skeptical. Hung Nguyen is a genuine talent, systematically trained in Ho Chi Minh City since age 11, but he belongs to a generation whose results are still too thin by continental standards. His 4:23.25 in the 400m IM in Cambodia put him first in Southeast Asia, but compared to the Paris 2026 Olympic standard (around 4:12.50), the gap remains over 10 seconds. Ten seconds in swimming is an abyss.

I once spoke with coach Dang Anh Tuan – who guided Anh Vien – right after SEA Games 31. He said something I have never forgotten: "Records are meant to be broken, but more importantly, we must break our own way of thinking." What way of thinking? It is the habit of treating SEA Games as the ultimate yardstick, while the rest of the region has moved to a new level. Singapore sent Joseph Schooling through the American university system, Thailand sent athletes to train in Australia, and the Philippines has invested heavily in mixed-heritage swimmers with international physiques. Meanwhile, we mostly train at home, with brief training trips to China or Japan.

This leads to an interesting paradox: Vietnam swimming has tradition, people, and desire – yet lacks a system large enough to convert those into continental standards. Anh Vien was an exceptional outlier, but an outlier cannot be a formula.

Looking closer at the technique of the younger generation, I see some encouraging signs. Tran Hung Nguyen has a fairly stable stroke tempo in the 400m IM: an average of 28 strokes per 50m, with a six-beat kick pattern during the freestyle transition. The six-beat kick helps him maintain lateral propulsion when switching from backstroke to breaststroke – the phase where most swimmers lose rhythm. But watching his breaststroke segment, I noticed a weakness: his head lift angle when breathing is too high (about 25-30 degrees above the water, while modern standards suggest 10-15 degrees). This lifts his center of mass and creates unnecessary hydrodynamic drag – a small detail, but over 400m, it costs about 1.5-2% extra energy. In a race where podium positions are decided by fractions of a second, 2% energy loss is extremely significant.

Fixing that breathing angle, I believe, is one of the technical priorities Hung Nguyen's coaching staff must solve before the 2026 Asian Games – when he reaches 23, the physical peak age for a male IM swimmer.

In international swimming, there is a term rarely mentioned: the "technical life cycle." Each generation of swimmers typically has 8-10 years to go from young talent to peak performance. In Vietnam, this cycle is often cut short by two factors: performance pressure from management and compensation schemes inadequate to retain athletes after their peak. Hoang Quy Phuoc – a veteran butterfly swimmer, now 32 – still had to compete at SEA Games 32 because the younger generation could not replace him. Phuoc was once Vietnam's great hope in the 200m butterfly, winning SEA Games gold in 2026 and breaking national records many times. But as he told me in an interview in Hanoi in 2026: "If there were a better system to focus on the Olympics, I could have done more." That sentence haunted me for years.

The finish line is where it begins – I learned this from the very athletes I wrote about.

On a more macro level, I believe Vietnamese swimming faces a crisis of foundation. When a swimming nation builds its entire strategy around one or two individuals, what happens when those individuals leave the sport? The answer is the performance drop we just witnessed. But the solution is not to search for a new Anh Vien – that still depends on anthropometric luck. The more sustainable solution is to build regional training centers with well-trained coaching staff and a sports science data system strong enough to track every stage of a young athlete's development.

Data is what Vietnamese swimming lacks the most. During my reporting trips to the National Sports Training Centers in Can Tho and Da Nang, I saw coaches still recording results on paper. In Japan, where I was born, every athlete has a digital profile containing stroke rate, stroke length, VO2max scores, even shoulder joint angles during training phases. Data does not create champions, but it helps a system see blind spots before they become limits.

Take another example: Nguyen Huy Hoang, 23, Vietnam's number one male swimmer in the 1500m freestyle with SEA Games golds in 2026 and 2026. Huy Hoang has an arm span of 1m88 – a rare advantage for an Asian physique. But looking at his stroke analysis over the 1500m, there is an anomaly: his average stroke rate is 34 strokes/minute in the first 800m, dropping to 30 strokes/minute in the final 500m. This 11% drop in stroke frequency during the sprint phase indicates the problem lies not in technique but in the ability to sustain anaerobic power. This is fixable with race-pace training sets incorporating EPO (maintaining speed after fatigue) – a method still unfamiliar to many domestic swim coaches.

I do not intend to teach Vietnamese coaches how to do their jobs. But as someone who has covered more than 20 major games in different regions, I recognize that the gap between Vietnamese swimming and continental swimming is not physical – Vietnamese athletes have perfectly good physiques – but in training technology and scientific thinking. Anh Vien once achieved 4:02.89 in the 400m freestyle at the 2026 Asian Games, ranking second in Asia. But 4:02.89 was produced by an old-school iron-discipline program of over 70km per week – an approach that quickly wears down the body. By 22, Anh Vien had a severe shoulder injury, which is why she never reached an Olympic final standard.

Modern swimming has changed. The world's best swimmers no longer swim 70km every week. Katie Ledecky swims about 55-60km per week, but compensates by spending 30% of her time on strength training and neuromuscular skill drills. The new philosophy is: swim smarter, not longer. Vietnam needs to embrace this philosophy. Huy Hoang's physical struggles over the past two years – battling a back injury after continuous high-intensity training – is a clear warning.

From the perspective of someone who stands poolside and observes, I realize that the biggest difference between a strong swimming nation and a potential one is not funding, not facilities, but training philosophy. In Japan, the concept of koshi – generating power from the body's center – is applied to most freestyle programs. In China, they build talent ID systems based on anthropometrics from elementary school. In Vietnam, I see training philosophies built on the individual experience of each coach – people who are excellent professionals but have had limited access to modern sports science.

That is not their fault. They work under tight budget constraints. In 2026, the total national budget for swimming was around 15 billion VND – a figure far smaller than what a mid-sized American university invests in its swim team. But money is not everything. What matters is a development strategy – long-term, systematic, not dictated by the two-year cycle of SEA Games results.

Pressing is not a tactic; it is a declaration of love to the ball. In swimming, that love manifests through thousands of strokes repeated daily. But love alone is not enough – intelligence is required.

Vietnamese swimming is at a crossroads. If it continues to chase the old model – focusing resources on a single star – then in 10 years, we will still be sitting here talking about a new Anh Vien or a new Tran Hung Nguyen. But if it chooses the path of building a system – with regional training centers, internationally trained coaches, and well-managed sports data – then we will not need to worry when one generation departs, because the next generation will be ready to step up.

The classic story I often tell young colleagues is the example of Singapore swimming. Before Joseph Schooling, Singapore was also just a mid-tier Southeast Asian swimming nation. They had no physical advantages, no tradition. But they built a system that sent athletes to American universities, where Schooling was coached by the very coaches who produced countless Olympic medals. When Schooling won Olympic gold at Rio 2026 in the 100m butterfly – beating Michael Phelps – the entire system functioned seamlessly. And after Schooling retired, Singapore still had young swimmers like Quah Zheng Wen, qualifying for consecutive Olympics. Because they did not build on an individual; they built on a foundation.

Vietnam can absolutely do the same. But it requires a shift in sports leadership mindset – a bold decision to move from a "medal-seeking" model to a "capacity-building" model. That is why this article does not end by praising Tran Hung Nguyen's achievements, but with a question for those who hold the destiny of Vietnamese swimming: Will you have the courage to accept a leaner SEA Games over the next 2-3 years, in exchange for a real Olympic team in 10 years – or will you continue chasing short-term golds?

In silence, an athlete's heart beats louder than the cheering. And in that silence, I hope there will be an answer.