A Pooh stick is simply a stick dropped from a bridge into a flowing stream as part of a race. Each player drops a stick on the upstream side of a bridge at the same time, then rushes to the other side to see whose stick emerges first. The game, called Poohsticks, was invented by the fictional character Winnie-the-Pooh in A.A. Milne’s 1928 children’s book The House at Pooh Corner, and it has been a beloved pastime for families ever since.
Where the Game Comes From
Poohsticks first appears in a chapter titled “In Which Pooh Invents a New Game and Eeyore Joins In.” Pooh is standing on a bridge, drops a pine cone into the water, watches it float out the other side, and realizes this could be a competitive game. He soon plays it with Piglet, Rabbit, and Roo, and during the game they discover Eeyore drifting out from under the bridge.
The game was inspired by a real place. Milne purchased a country home in Ashdown Forest, a heathland in southeast England, in 1924. A small wooden bridge nearby, originally called Posingford Bridge and built in 1907, became the setting for the story. Milne’s son Christopher Robin officially renamed the structure “Poohsticks Bridge” during a ceremony in 1979. Years of foot traffic eventually wore the bridge down so badly that it was dismantled in 1999. A replacement was built with funding from local groups and the Disney Corporation. The original timbers were later restored using local oak and offered for sale.
Today, Poohsticks Bridge sits just outside Ashdown Forest near Chuck Hatch and can be reached by following a bridleway from the Pooh car park on Chuck Hatch Lane.
How to Play
You need almost nothing: a bridge with a railing over a flowing stream and one stick per player. Everyone lines up on the upstream side of the bridge, holds their stick over the edge, and drops (never throws) on a countdown. Then you all rush to the downstream side and watch for the first stick to appear. Whoever’s stick comes through first wins.
That’s genuinely it. There are no formal rules about stick size, no penalties, no scoring system. Part of the charm is that it takes about ten seconds to learn and works for any age. The only real requirement is moving water and a bridge you can safely stand on.
Picking the Right Stick
Despite how simple the game looks, stick selection does matter. A physicist who studied the problem for The Guardian found that the ideal Pooh stick is relatively thick and long, heavy enough to sit low in the water but not so heavy it sinks. Bark is actually an advantage: rough, intact bark catches the river’s flow like a tiny paddle, helping pull the stick along.
About a third of players instinctively reach for a long, thin stick, which is only half right. Length helps, but a skinny stick sits too high on the surface and doesn’t catch much current. The three main variables are cross-sectional area (how wide the stick is), density (how it floats), and drag (how much water pushes against it). A chunky twig with bark still on it outperforms a smooth, pencil-thin branch.
Why the Results Are So Unpredictable
If a river’s current simply got faster toward the middle, the stick closest to the center would always win. That would make for a boring game. What actually makes Poohsticks interesting is that natural streams are full of eddies, backflows, and swirling vortices, especially around bridge pilings. These create what fluid dynamicists call a von Kármán vortex street: alternating swirls shed from either side of an obstacle that can trap a floating object or slingshot it forward.
A study published by The Royal Society examined this in detail. At faster flow speeds, rivers become turbulent, meaning the velocity of the water changes unpredictably in both space and time. Even at slower speeds, sticks can follow chaotic paths because tiny differences in where they enter the water lead to wildly different trajectories. A stick that lands a centimeter to the left might get pulled into an eddy and stall, while one a centimeter to the right shoots straight through. This sensitive dependence on starting position is why no amount of strategy can guarantee a win.
Stick size adds another layer. A Pooh stick is typically a few centimeters to a few tens of centimeters long, which puts it right in the range where it interacts meaningfully with the flow structures in a small stream. Smaller objects tend to follow the water’s path more obediently. Larger ones have more independence from the current but are also more likely to get caught on obstacles. Whether a bigger stick escapes a trapping eddy faster than a smaller one depends on conditions that change from moment to moment.
The World Championships
Poohsticks has been a competitive sport since 1984, when a lockkeeper named Lynn David started the World Poohsticks Championships as a fundraiser for the Royal National Lifeboat Institution. The event was originally held at Day’s Lock on the River Thames near Dorchester-on-Thames in Oxfordshire. Over the years it moved to a bridge over the River Windrush near Cogges Manor Farm in Witney, and more recently to Sandford-on-Thames, where the 2024 and 2025 championships took place at Sandford Lock.
The competition includes both individual and team categories, and despite some participants insisting the game involves genuine skill, no team or individual has ever won the championship more than once. That track record lines up perfectly with the physics: in a turbulent stream, luck dominates. The 2023 event commemorated the 40th anniversary, and the organizers continue to number events sequentially even through gaps (several years were cancelled, including 2001 and 2019 through 2022).
Playing at Ashdown Forest
If you visit the original Poohsticks Bridge in Ashdown Forest, it’s worth knowing that the forest is a protected Site of Special Scientific Interest. Removing plants, decaying wood, moss, fungi, leaf mould, or turf requires special consent from Natural England. The conservators have noted a dramatic increase in both casual and commercial foraging that threatens the ecosystem, particularly rare fungi species. Your best bet is to bring a stick from home or pick one up from the ground well outside the forest boundary rather than snapping branches or collecting wood within the protected area.