Sa Pa, 8 A.M. on September 18: 5,300 People Step Into the Mud

In Sa Pa, people do not measure the difficulty of a race in kilometres. They measure it in mud.

At eight o'clock in the morning of September 18, 2026, on a slope of red earth above the mountain town in Lao Cai province, a starting line was hastily painted in white. There was no grandstand. No bank of television cameras squeezing the sideline of a semifinal. Only the sound of laces being pulled tight one last time, plastic backpacks knocking against each other, and the breathing of people who had woken up before the road was even visible.

The Vietnam Mountain Marathon 2026 began there. A 100-mile distance, a 100 km distance, and a spread of shorter races across four days from September 17 to 20. More than 5,300 athletes from 54 countries. Those numbers sit on paper, dry and neat. But when you stand at the edge of the first climb, you realize no number can describe what it feels like to step through the first puddle of mud in the dark.

The stadium is empty, yet I can hear the heartbeat of an entire generation.

I once stood at an NCAA track, watching an unknown runner break a meet record in lane eight while the crowd had not yet learned his name. I thought I was used to that moment before someone becomes someone. But Sa Pa taught me something different. There is no lane eight here. Here, everyone is lane eight.

Context: a race that has grown bigger than itself

The Vietnam Mountain Marathon is no longer a movement event for a few hundred mountain lovers. The VNM 2026 organizing committee announced a field of more than 5,300 athletes, pushing the event into the group of the largest trail races in Southeast Asia. The more interesting part lies elsewhere: the race has officially joined the World Trail Majors system, a group of prestigious mountain races linked into an international series.

For someone who has spent years following racing circuits, I see a governance signal there. When a local race enters an international system, it is not just buying prestige. It must accept a set of standards: safety standards, aid standards, course-measurement standards, and most importantly, a fixed calendar slot. Sa Pa sits in mid-September this year, a slot the endurance world calls the autumn window.

The terrain is what makes Sa Pa different. The town sits at more than 1,500 metres above sea level, surrounded by mountains of the Hoang Lien Son range. The race route does not run on asphalt. It runs through bamboo forest, terraced fields, and passes that local people cannot walk without stopping. Heavy rain during the event turned many sections into liquid mud and turned already difficult rocky descents into slipping traps.

The organizers had to install rope-assisted sections for athletes to grip on the way down. Slippery slopes, natural mud slides, fog that hides the view. These are not decorative details for a press release. They are real operating conditions, and they change entirely how a runner must think through every metre.

Core analysis: the course as a sawtooth chart

The 100-mile and 100 km distances started at 8 a.m. on September 18. That start time is not accidental. Over 100 miles, organizers need to put most of the running into daylight before darkness falls, to reduce risk for slower runners. But over such a distance, nobody escapes the night. The best runners will still meet darkness near the end. Ordinary runners will meet it in the middle.

This is where course analysis gets interesting. The elevation profile of the VMM is not a soft curve. It is a sawtooth. Up, down, up, down, continuously, never giving the body a stretch to truly settle its heart rate. On flat endurance races, people calculate pace by the kilometre. Here, pace is an almost meaningless concept. The only things that matter are power, depletion, and the ability to recover after each climb.

This race is not decided by speed. It is decided by how a person manages the energy left after burning through all their confidence.

I have sat for hours with the elevation chart, comparing climbs with descents. What emerged is a familiar paradox of mountain running: the descent, the part a newcomer assumes is the reward, is where the body is destroyed fastest. The thigh muscles work like a brake while the knees absorb all the force driven downward. On mud, every footfall is uncertain, the muscles tense to keep balance, and energy leaks metre by metre. By the next climb, the runner has no room left to calculate. Only room to endure.

Aid stations are another line I want to linger on. With more than 5,300 athletes spread across distances, the station system becomes a real logistics machine: water, electrolytes, hot food, fuel, blankets, medicine, and hundreds of volunteers standing through the night in the cold of the highlands. In endurance racing, an aid station is not a rest stop. It is the spine of the race. A runner can survive 20 hours if the stations are good enough. They can collapse after 12 if the stations are not.

Amid endless data, I always look for a human being who is breathing. And in Sa Pa, that breathing human is usually not the leader.

The real roster of a trail race

One of the most common misunderstandings about trail running is that people only pay attention to the winner. But this race has a hidden roster structure, and it is far more complex than a simple leaderboard.

At the top layer are international professional athletes, people with sponsors, coaches, and nutrition plans written hour by hour. They come to Sa Pa for the World Trail Majors, for ranking points, for reputation within the sport.

In the middle layer is a group of serious runners who do not make a living from running. They are engineers, doctors, teachers, entrepreneurs. They buy entry, pay for hotels, arrange their own leave, and focus for a whole year on one race. This is the largest layer, and also the least discussed.

At the bottom layer are those who come to finish. They know they will not reach the podium. Their only goal is to reach the finish before the time cut.

And in a corner of that roster, this year, there was a name familiar to Vietnamese television audiences: actor Nhan Phuc Vinh. He is recognized by professionals in the running scene as a mountain runner with seniority among artists. The appearance of a famous face in a 100 km race raises an interesting question about how sport tells stories about itself. When a celebrity steps onto the course, the public notices them first. But later, when night falls and rain comes, fame does not help. Only the body and the will remain, and they divide people in the fairest way sport has ever known.

One fact is worth remembering: 54 countries. What does that number say to someone who observes for a living? It says Sa Pa has become a destination on the international endurance calendar, no longer a regional race that foreigners happen to hear about. When someone from Europe or North America books a flight to Vietnam to run 100 miles in the rain, they do not come for a medal. They come for an experience they cannot find on the road outside their home.

What the "harshest" label hides

For days, Vietnamese social media gave this race its attention in a language full of admiration. People called it the harshest race in Vietnam and repeatedly expressed awe at the endurance of the athletes. That emotion has a real basis. Heavy rain, mud, fog, slopes where you must use a rope to descend, clothes soaked for dozens of hours — all are recorded facts, not rumours.

But the question I want to raise does not point at the audience. It points at the label itself.

When we call a race "the harshest", we canonize suffering. And when suffering becomes a brand, something strange happens: the most beautiful part of the event disappears from the story. I have followed many endurance races, and what I have learned after many years is that the true moment of sport is not in who endures best. It is in a volunteer carrying a lamp and rebuilding a sign on a slope, a nurse standing shivering in the night to check a runner's body temperature, an old coach sitting on the roadside to encourage a student who has lost rhythm.

The golden cup is not at the finish line, but at the turns we never planned for.

In the night of September 18 into the 19th, while thousands were still wading through mud in the mountains, what sustained the race was not individual courage. It was the system. It was the people ahead of the field, clearing the trail, planting direction markers, making sure a runner in fog still knows the way is right. Without that system, the "harshest" label would turn into another label far faster: disaster.

Darkness on the mountain has no spectators. But there are people holding lamps, waiting.

There is another counter-current angle I want to test. Looking at how the media describes it, one might think this race clearly separates the strong from the weak. But the reality of an ultra distance is the opposite. When the course runs 161 km with large accumulated elevation, the difference between professionals and yearning amateurs narrows to a single point: energy management and mind management. Running technique, which creates big differences on flat ground, becomes secondary. By hour fifteen, most runners are no longer running. They power-walk, they climb, and they negotiate with themselves.

In trail running, we call it the race within the race. Professionals call them "low points", the moments of mental collapse everyone must pass through. The experience of a trail runner is not running better. It is knowing that the feeling of collapse will come, and knowing it will pass.

On results and what happens after

The champions will be announced on September 19, 2026. At the time this piece is being completed, the final results are not yet fixed. I want to state that clearly, because during transfer season and the weeks of sports rumours, accuracy of facts matters more than the appeal of a story. Nobody knows who will touch the finish line first until the finish line is touched.

But one thing I can say for certain. Whoever the winner is, they will not be the only one remembered. In a race with more than 5,300 people, remembrance must be distributed by a logic other than the leaderboard. The last to arrive, the one walking all through the final night, the one who had to drop out at kilometre 70 with cramps — all contributed to making the story of the race. Not by winning, but by making winning meaningful.

A thought about this hidden contribution brings me back to an aspect results bulletins often skip: the economics of the event. With 5,300 athletes, thousands of them international visitors, what does Sa Pa receive? A trail race is not only a competition. It is a tourism event. Hotels fill for four days. Restaurants are busy. Transport, equipment rental, guides — all are activated. And when an event repeats year after year, it creates a kind of soft infrastructure: local people learn that travellers come not just to see scenery, but to run on their own roads.

Another aspect the "harshest" label blurs is the shift in the relationship between Vietnam and the international endurance community. Previously, Asian athletes who wanted to run an international trail race had to go abroad. Now the flow has partly reversed. Foreigners fly in. And not to test themselves at a small race, but to complete a distance that has been systematized, a distance whose conquest is enough to become a line in their athletic record.

Zooming in, I want to return to the elevation chart once more. In a sawtooth race, the decisive factor is not climbing ability. It is recovery between climbs. A good runner may climb five minutes faster than a rival. But if their heart rate does not recover quickly enough before the next climb, they will lose ten minutes on the next one. Sa Pa does not punish the slow. It punishes those who burn energy when it is not needed.

This is why runners accustomed to flat roads break easily on trail races, and conversely, hikers and mountaineers can surprise. They bring a skill flat roads cannot teach: listening to the body before it speaks in a scream.

The runner who is not forgotten

In sports bulletins, we tend to build stories around the winner. It is the easiest formula and proven to sell more. I have done this job for 22 years and I understand that. But precisely for that reason, I want to talk about another side of Sa Pa.

There is something people working backstage understand well: in a mountain race, most of the direct audience is not present. They are at home. They follow via phone. And the way a race enters public consciousness through a small screen reminds me of an old lesson: sometimes the truest voice comes from a small device, when there is nothing around but silence.

The videos from Sa Pa that viewers see are not videos from a match in a packed stadium. They are short, shaky clips shot on phones, in which a stranger is wading through mud and telling themselves to continue. The appeal of those clips lies in their absolute authenticity. No actor, no script, no post-production.

Meanwhile, on empty stretches, there are people working with no one filming: the man carrying a flashlight uphill to check a sign knocked down by rain, the local woman standing since 3 a.m. to serve hot tea at the 80 km mark. They are the silent ones, and throughout my career I have learned that most of the truth of sport lies with them.

The counter-intuitive point: the existence of a genre without spectators

This is the point I want to name clearly as a counter-intuitive angle.

In traditional sport, the value of an event is measured by its audience. A thrilling football match draws tens of millions. A major tennis tournament appears on global television. Audience measurement is the yardstick of success, and that is a criterion professional sport cannot deny.

But trail running exists on a completely different logic. It is one of the few disciplines where the number of players far exceeds the number of viewers. More than 5,300 people took part in Sa Pa, but the number who sit and watch a 100-mile race from start to finish is very small. This is the strangest paradox of the sport: it grows in scale and influence, yet does not generate a corresponding commercial audience.

So why do sponsors, international race systems, and even the tourism industry still pour resources into it?

The answer lies in a concept I call "community asset". A mountain race creates an asset that cannot be moved: it binds people to a place. Every athlete who comes to Sa Pa carries a network. They retell the story to family, to friends at home. They return the next year, and sometimes bring their children. The loyalty of the mountain-running community is stronger than the loyalty of football fans, because it is built on bodily experience, not only on observation.

Another thing is equally counter-intuitive. In the world of tracks and stadiums, people often treat a harsh environment as a barrier to growing a sport. In trail running, the opposite is true: harshness itself is the engine of spread. The harder it is, the more it is talked about. The more it rains, the more it is shared. And Sa Pa has leveraged this naturally, without any expensive communication campaign.

Of course, that growth is not entirely harmless. When a race becomes rapidly famous, pressure on local infrastructure rises. Issues of waste on the course, of trail use damaging ecosystems, and of ensuring safety for large numbers in extreme weather are always difficult equations. I know this well because I have watched major races face similar problems, and I know no race escapes them once scale passes a threshold.

Those behind every marker

There is one group I want to give the final words of this analysis to.

With 54 countries participating, Sa Pa operates not only as a sports event. It operates as a cultural intersection. Over the years I have followed international events in many countries and I know language is not the main barrier. The main barrier is the difference in how people understand and respond to difficulty. In Sa Pa, thousands of people from cultures that share no common language must find ways to communicate through the simplest signals: a nod, a hand gesture, a look of understanding when both are mid-climb and both know what lies ahead.

Track and field and the endurance disciplines share one heartbeat — only the way time is measured differs.

That is why I do not write about Sa Pa as a movement event. I write about it as proof of something I have believed since I was a boy running on a school track: sport does not need spectators to have meaning. It only needs participants, and participants will generate meaning on their own.

What I brought back from Sa Pa

When the trophies are presented on September 19 in Sa Pa, there will be an image moment for the first finisher. That person deserves it. But what I want to keep is not in that moment.

What I want to keep is the image of a person with no name in anyone's speech, who spent 30 hours to complete a distance they knew they could not win, and who got up after a fall in the mud at kilometre 120, not for a medal, only because they had told themselves they would get up.

There is an honesty only endurance sport can provide, and it cannot be created by award ceremonies. It is created by early mornings when people put on wet shirts, by sleepless nights, by the looks between two strangers completing a limit together, not knowing whether they will get through it.

When I left Sa Pa, I was not thinking about who won. I was thinking about what I had seen on a track years earlier, and here as well: people do not step into the mud to become legends. They step in to prove, to themselves, that they can keep stepping.

What the Vietnam Mountain Marathon 2026 leaves behind is not in the leaderboard. It is in the question each of those 5,300 athletes answered in their own way: when there is no audience, when there are no stage lights, what are you running for?