Seeüberquerung

The atmosphere at Strandbad Niederuster on race day is defined by a local camaraderie, as the Uster Triathlon community gathers to transform the lakeshore into a hub of activity. For many, this event is a familiar annual commitment, a moment when the town’s residents and visiting swimmers convene to share the water without the pressure of timing or rankings. The registration process itself feels like a neighborhood reunion before the collective start at 17:00, where the focus remains on the joy of movement across the Greifensee.

## The water and the landscape As you begin the 1500m crossing, the scale of the second-largest lake in the canton of Zürich becomes apparent, with its 6km length stretching toward the horizon. The water reaches depths of up to 32 metres, but your gaze is likely to be drawn toward the shoreline. The entire perimeter of the lake is protected from development, preserving the vast reed beds that serve as a sanctuary for over 120 species of migratory birds. While you swim, keep an eye on the ridges above the town, where the silhouette of Uster Castle stands as a sentinel. First documented in 1267 and rebuilt following a fire in 1492, this landmark has witnessed centuries of local transformation.

## A legacy of change The waters you navigate are surrounded by a landscape shaped by radical shifts in history. In 1830, the Ustertag assembly brought 10,000 citizens to these shores to demand a new constitution, a key milestone in the formation of the modern Swiss Federal State. Only two years later, the same area was the site of the Usterbrand, a significant uprising where local weavers destroyed mechanical looms in a desperate bid to protect their trade. Today, the tranquility of the Greifensee provides a stark contrast to these turbulent events. If you are looking for other ways to experience the regional waters, those interested in a different pace might explore the Zürcher Limmatschwimmen held in August, or for a much greater distance, the Sri Chinmoy Marathon-Schwimmen. For those who prefer a shorter challenge, the 800m course serves as a welcoming route for aquajoggers, all set within this preserved natural corridor.