Bog Snorkelling: Wales's Great Peat-Trench World Championship

Every August Bank Holiday, grown adults in wetsuits and flippers lower themselves face-first into a trench of cold peat water in mid-Wales and thrash 120 yards through the dark. This is the World Bog Snorkelling Championship, and it is exactly as absurd, as cold, and as gloriously pointless as it sounds.

The venue is Waen Rhydd, a boggy patch near Llanwrtyd Wells in Powys — a place that bills itself as the smallest town in Britain and behaves like the eccentric uncle of the whole country. The organisers cut a trench roughly 60 yards long straight through the peat, fill it with the sort of brown, tannin-stained water that gives Welsh bogs their smell, and invite anybody daft enough to swim two lengths of it against the clock. First championship: 1985. It has run in August almost every year since, pausing only when the whole world paused in 2020 and 2021.

I have not swum it. I am a Copenhagen man, and my idea of cold water is Amager Strandpark in June. But I have spent a good part of my life watching people do voluntarily uncomfortable things in the name of a good story, and bog snorkelling belongs in that hall of fame alongside the truly great daft-sport pilgrimages of Europe.

The rules, such as they are

The mechanics are strict in the way only a joke taken seriously can be. You wear a snorkel, a mask, and flippers. A wetsuit is not compulsory, though anyone who has felt August water in a Welsh bog will tell you it is a very good idea. Then you swim the trench twice — two consecutive 60-yard lengths, 120 yards in total — in the fastest time you can manage.

Here is the crucial bit, the rule that makes the whole thing what it is: you may not use conventional swimming strokes. No front crawl, no breaststroke pulling you along. You propel yourself by flipper power alone, arms more or less useless at your sides, face down in water you cannot see through, trusting the walls of the trench to keep you pointed the right way. The good competitors look like they are doing a furious, low, dolphin-legged shuffle through soup. The times, for the fast ones, dip well under a minute and a half, which sounds impossible until you remember that a strong swimmer wearing flippers is a genuinely powerful animal.

You also cannot see anything. The water is opaque peat-brown, the visibility roughly zero, and part of the sport is the strange sensory deprivation of it — the cold, the muffle, the smell of centuries of rotted vegetation an inch from your nose. People come up spitting and laughing and occasionally a little disoriented, which is the correct response.

Llanwrtyd Wells, capital of the wonderfully stupid

What I find genuinely brilliant about bog snorkelling is that it did not fall from the sky. It grew out of a town with a deliberate, decades-long project of inventing ridiculous events to give people a reason to visit. Llanwrtyd Wells was once a Victorian spa town, prosperous on the promise of its sulphur springs; when that trade faded, the town needed a new pull, and a handful of locals landed on comedy as tourism strategy.

The bog championship, born in 1985 out of pub conversation, is the flagship, but it shares a calendar with a whole roster of the magnificently silly. There is the Man versus Horse Marathon, a 22-mile race pitting runners against riders on horseback across Welsh hill country, which a human being has actually won more than once. There is a Real Ale Wobble mountain-bike ride. There are, in various years, the World Alternative Games — a festival of made-up sports including wife-carrying, bog cycling (yes, you ride a weighted bike along the bottom of the trench) and even a bog triathlon for the truly committed.

It is a town that decided its identity would be inventive foolishness, and then stuck to it for the better part of forty years. That kind of long-form commitment to a bit is, to me, more impressive than any single event. Anybody can have a funny idea once. Building a town’s whole tourist economy on the collective willingness to be soaked in a ditch — that takes real conviction.

The European family of the daft

Bog snorkelling belongs to a specific, beloved category of European event: the absurd competition played dead straight. You find its cousins scattered across the continent, and they share a DNA. Somebody had a silly idea. A community adopted it. Rules accreted, a world championship was declared, and now people fly in from other continents to take it seriously.

Finland runs the two purest examples. There is the Wife-Carrying World Championships at Sonkajärvi, where men haul a partner through an obstacle course for their combined weight in beer, and there is the sublime Air Guitar World Championships in Oulu, where the instrument does not exist and the sincerity is total. Both share the bog’s essential trick: commit to the joke so completely that it stops being a joke and becomes a discipline, with technique and champions and heartbreak.

Britain’s own entry in this family is up the road in Gloucestershire, where the cheese rolling at Cooper’s Hill sends people hurling themselves down a near-vertical slope after a wheel of Double Gloucester. The two events could not be more different in danger — bog snorkelling is cold and undignified but broadly safe, while cheese rolling is a genuine tumble down a cliff — yet they are recognisably the same species. Both are folk events that outgrew their villages. Both are the kind of thing that makes an outsider ask, quite reasonably, “but why,” and both have the same answer: because somebody dared, and it was funny, and it stuck.

What it takes to be quick

Do not mistake this for an easy sport just because it is a silly one. The fastest bog snorkellers are proper athletes, and the ones who win consistently have worked out things the rest of us never would. Kick technique matters enormously — a strong, steady flutter from the hips beats a frantic thrash from the knees, because the frantic version just churns the water and stalls you against the drag of the peat. The trench is narrow and the walls are soft, so any wobble sends you scraping along the side, bleeding speed. Straight-line efficiency is everything when your arms are forbidden from steering.

Breathing through a snorkel while working that hard, face-down in near-freezing water, is its own discipline. Panic is the enemy. New competitors tend to gulp, hyperventilate, and lose their rhythm halfway down the first length; the veterans settle into a slow, deliberate breathing pattern and let the legs do the work. There is a meditative quality to it that people who have done it describe again and again — the cold, the dark, the muffled world, the metronome of your own kick and breath. It is genuinely a bit hypnotic, right up until you smack the far wall and have to turn for the second length.

The record times sit under a minute and a half for the full 120 yards, which, once you have watched an ordinary swimmer flounder through a single length gasping, seems frankly superhuman. Those quick runs come from years of practice, good kit, and a wetsuit that fits — the cold saps power fast, and a shivering body is a slow body. The championship draws serious contenders from as far away as Australia and South Africa, people who plan a Welsh holiday around the August Bank Holiday specifically to fling themselves into a ditch faster than anyone else on earth. There is something wonderful about training for that. Somewhere right now, a person is doing timed flipper drills in a swimming pool with a very specific bog in mind.

Why cold brown water pulls a crowd

The honest question is what brings the crowds and the competitors — some from Australia, South Africa, all over — to a field in Powys for the privilege of an August ditch. Part of it is the spectacle: watching people submit to voluntary discomfort is reliably entertaining, especially when they are doing it in fancy dress, which many bog snorkellers do. Costumes are half the fun; the trench has seen dinosaurs, superheroes, and people in full evening wear thrashing through the peat.

But the deeper pull is the same one I chase at every good festival and every strange gathering I write about. It is the pleasure of a shared, slightly ludicrous experience — the sense that everyone present has agreed, for one afternoon, that this ridiculous thing matters. That agreement is the whole magic. A bog is just a bog until a few hundred people decide that swimming it is an event worth having, and then it becomes a stage, a story, a reason to travel.

Llanwrtyd Wells understood this before most. The town took its greatest liability — the wet, cold, unglamorous land around it — and turned it into the very thing people come for. There is something Welsh in that, a stubborn humour in the face of drizzle, and something universal too. The best strange traditions are the ones that look their own absurdity dead in the eye and swim on regardless, flippers churning, face down in the dark, refusing conventional strokes because that would be far too easy.

If you go — and you should, at least once — bring a wetsuit you do not love, expect to smell of peat for a day, and do not, under any circumstances, use a proper swimming stroke. That is the one thing they will not forgive.