Simssee Langstreckenschwimmen

The rhythm of your stroke catches the reflection of the late Gothic spire on the eastern shore, a stone sentinel that has watched these waters since the 15th century. Beneath you, the floor of the lake drops away, a silent reminder of the Würm glaciation that carved this basin as the final vestige of the massive ancient Lake Rosenheim. You are navigating a landscape defined by deep geologic history, where the water’s reach was once far more expansive than the 22.5-meter depths you traverse today.

The environment

As you push toward the southern bank, the landscape shifts into the protected expanse of the Achalterwiesen, where undisturbed wet meadows meet the shoreline in a seamless transition. This quiet stretch offers a stark contrast to the historical intensity of the region, where remnants of wartime labor camps once operated in the nearby forest clearings. The atmosphere here is one of focus, far removed from the local folklore of the mid-20th century, when rumors of telekinetic disturbances gripped the nearby town of Rosenheim. During the Chiemsee Full Moon Swim, swimmers often find the water conditions more predictable, yet here at the Simssee Long-Distance Swim, the environment demands a consistent pace to manage the varying thermal layers of the lake.

Race logistics

Scheduled for May 17, 2026, this annual event forms a key part of the Alpen Open Water Cup. The organization provides comprehensive support, essential for navigating the lake's specific conditions. While early season surface temperatures may feel sharp, the lake is monitored closely to ensure safety for all participants. If you are looking for local lodging, you can find varied options ranging from family-run guesthouses in Riedering to lakeside camping spots. For those interested in the local culture beyond the race, the surrounding area offers diverse activities that highlight the region's unique heritage. Whether you are aiming for a personal best or simply completing the course, the race remains a test of endurance set against the backdrop of one of Bavaria's most preserved glacial remnants.