BSV Freiwassercup Burghausen – Wöhrsee

At the foot of the fortified ridge, the tranquil waters of the Wöhrsee fill a medieval defensive moat that originated as a natural loop of the Salzach river. Here in Upper Bavaria, the BSV Freiwassercup Burghausen – Wöhrsee brings open water swimmers together in the calm, emerald expanse of the Wöhrsee lake in Burghausen. Organized by SV Wacker Burghausen, the competition forms a centerpiece stage of the Bayerncup, a storied Bavarian circuit that has spanned thirty editions across the state's most scenic lakes.

The Wöhrsee circuit: distances and racing under the fortress

The racing takes place entirely on a sheltered 1.25-kilometre circuit marked across the calm surface of the lake. Competitors take on individual distances ranging from 2.5 kilometres and 3.8 kilometres up to 5.0 kilometres and 7.5 kilometres, while team swimmers also contest a 3 x 1.25 km relay. Gliding around the turning buoys, swimmers find their rhythm without the disruptive swells or tricky tides common to coastal courses. Staged at the height of summer in late July, the event provides idyllic conditions for fast and composed racing. Under the warm summer sun, the sheltered lake basin keeps the water placid and welcoming, generating strong turnouts, competitive fields, and an energetic lakeside atmosphere.

Slicing through the clear water, swimmers experience the smooth glide of freshwater. Wöhrsee is no novice to open water competition. Since the mid-1990s, this water has served as a revered championship stage, hosting regional rounds of the Bayerncup as well as the Bavarian Masters Championships and full state championships. By the time July arrives, the basin's summer warmth and placid conditions offer sheer comfort to open water racers.

Wöhrsee: from Salzach oxbow to ducal defensive moat

The lake owes its dramatic position directly beside the castle to the ancient power of the river. Centuries ago, the Salzach shifted its course, leaving behind a cutoff oxbow basin cradled in the natural depression between Burghausen's Old Town and the ridge. It was this protected geological bowl that early rulers immediately recognized as a supreme strategic prize. During the Middle Ages, engineers fortified the natural watercourse by constructing a weir to dam the oxbow. Known in archival documents as the Wöhr—a name meaning water enclosed by a weir, first recorded in 1332—the flooded lake was transformed into an insurmountable moat defending the sprawling fortifications of Burghausen Castle. What had once been a meandering river bend became an engineered liquid rampart that kept invaders away. The impounded water quickly became the economic lifeblood of the fortress community as well. The ducal court engineered watercourses to turn the heavy wheels of the court mill and harvested thick blocks of winter ice.

Herzogbad and the garrison school: centuries of bathing at Wöhrsee

Long before it became an open water race course, Wöhrsee developed a celebrated culture of therapeutic swimming. At the northern end of the lake basin, a natural mineral spring was developed into a wellness retreat known as the Herzogbad. In the nineteenth century, the military repurposed the sheltered water once again, establishing a garrison swimming school along the bank to train soldiers. Then, in 1833, civilian residents were officially granted access to bathe in the lake.

The Salzach at Burghausen: salt barges and alpine waters

The high rock offered safety, while the river provided an indispensable highway into the alpine heart of Europe. The river drew its name from the alpine salt, or *Salz*, that once dominated the regional economy. For centuries, salt mined in Hallein was floated down the river to Burghausen. River navigation continued to play a central commercial role well into the nineteenth century, with formal river shipping established in 1891. Rising high in the Kitzbühel Alps at an altitude of approximately 2,300 meters, the Salzach churns through the Salzachöfen Gorge before leaving the mountains behind. For nearly seventy kilometers, the river forms the natural border between Bavaria in Germany and Upper Austria, flowing past Burghausen until it eventually terminates at Haiming where its waters pour into the river Inn.

The Innspitz reserve: riparian forests at the river confluence

A short journey downstream from Burghausen brings travelers to the Innspitz, a wild triangular spit of land created where the Salzach quietly meets the Inn. Here, the rushing currents give way to a pristine reach of still water fringed by steep banks and dense, untouched riparian forest. The entire confluence is shielded under the Salzachtal landscape conservation area, forming a core component of the European bird sanctuary Lower Inn and the Salzach mouth nature reserve. The undisturbed borderline wetlands flourish along the area. For visitors exploring the river valley on foot or by bicycle after race day, the historic Salzhandelsweg trail runs directly through the reserve.