Seeüberquerung

On the morning of August 22, 2026, the quiet shores of Strandbad Niederuster will stir with the familiar hum of the Uster Triathlon community. This annual gathering at the Greifensee is less about the clock and more about reclaiming the water that defines this landscape. For the local residents, the lake is a constant presence, a 6-kilometer stretch of water that has witnessed everything from the quiet growth of the town into the third-largest city in the canton of Zürich to the echoes of the 1830 Ustertag, where 10,000 citizens gathered nearby to advocate for a new constitution. While the atmosphere is relaxed, the 1,500-meter crossing carries the weight of a regional identity forged in both democratic progress and industrial struggle, including the historic 1832 Usterbrand riots that shaped the town's social fabric.

Swimming the Greifensee

As you push off from the shore, the immediate sensation is one of immersion in a protected environment. The entire shoreline of the lake remains under strict UNESCO protection, ensuring that no new development encroaches on the reed beds that now serve as a vital refuge for over 120 species of migratory birds. This strict preservation means that as you navigate your way toward the opposite bank and back, your view is largely unchanged from that which greeted the 13th-century occupants of Uster Castle. The castle remains a silent, stone sentinel on the hill above the town, visible from the water as a landmark of the region's long-standing history. The lake itself, reaching depths of up to 32 meters, feels expansive, yet the lack of boat traffic—managed by the event's precise organization—keeps the surface conducive to a steady, rhythmic stroke. For those seeking a different pacing in the same general region, the 60. Zürcher Limmatschwimmen takes place just one week earlier, offering a contrasting urban river experience compared to the pastoral stillness of the Greifensee. The 25 CHF entry fee includes a silicone cap and a finisher gift, a modest commitment for an afternoon spent in a basin that also encompasses the moorland of Werrikerried, a site of national importance for local amphibian breeding. With a 1.5-hour time limit, the event invites a broad range of participants to experience the lake at their own pace.