21st/22nd of June 2024



Discover the mystic and fjordlike nature of lake Ottenstein


Pure nature unfolds in the fjord-like waterways of Lake Ottenstein, lined with numerous bends and twists,                                       waiting to be explored by swimmers.

Orientation becomes a fascinating part of this mystical experience. Swimming here is simply unique.


In 2024, some exciting changes await due to our new headquarters at Waldreichs Castle.


Here are the updates that apply to all routes:

  1. Due to increased tourist flows around the Ottenstein boat operation, we are relocating the swimming event to a quieter part of the lake.

  2. The headquarters, including registration and award ceremonies, will be the enchanting Waldreichs Castle.

  3. Shuttle services for the main competitions of 14 km, 7 km, and 3 km will operate from there to the starting point or from the finish.

  4. From now on, buoy requirements apply to all distances to meet safety standards.

  5. The 14 km event will be conducted without boat escort for the first time, allowing more swimmers to tackle the distance.

Immerse yourself in the renewed swimming experience and enjoy the untouched nature of Lake Ottenstein!


Be a backwaterman 2024 !



GPS Schloss Waldreichs


Saturday 22nd June 2024

Classic Open Water

  7 km classic open water

"The special One" - the classic 7 km from Mitterreith to Ottenstein is a special experience. Pure nature in the fjord-like waterways of the Ottensteiner reservoir with many bends and turns, waiting for the swimmers. Orientation is part of mysticism. Simply unique to swim here
Places are limited to 80
 14k Marathon (double distance)

Due to the high demand, the 14 km marathon distance with start and finish on the bathing meadow near Ottenstein Castle will be swum in 2024 without a compulsory accompanying boat, but with mandatory buoys.


Places are limited to 40


for everyone

  750m / Olympic 1500m


In the fjord-like arena between the dam, ruins and castle, 1 - 2 laps (1.5 km -2x 0.75 km) open water experience await you in the lake arena.

The course is fully visible from the terrace of the restaurant - ideal for beginners or short-distance specialists


Places are limited to 50














Adventure Challenge

 3 k



We offer you a new fjord called Purzelkamp which is seen is the nicest one becaus of his narrowing arms and rocks beside.


Swimming along the fjord-like bays passing the boat operation offers you unique views below the big bridge to the ruines of Lichtenfels.


Enjoy the adventure.


Places are limited to 50










Green deal   


Our environment secures our future.




We also want to make our contribution. For years we have been recognized as a particularly sustainable event.   




We are now going one step further and supporting sustainable travel.




We offer a bonus of 10% of the respective entry fee for all those athletes who arrive sustainably (ie in the form of public transport such as train, bus or bicycle).   




This bonus is collected and invested in a sustainable project in the region. This is determined together with the municipality/NÖN.   




Proof is provided on site by means of a ticket etc.   




link to public arrival