An adventure through the confluence of two mighty Siberian rivers. Extreme swim for 2, 10, 25 km through the confluence of two Siberian rivers Ob and Irtysh. Distances for beginners and experienced swimmers. The participants start, move along the navigation buoys and enjoy the Siberian current. The finish line of all the distances is located in the "Water Gate of the city" - this is the river station. For more than three centuries, the only mode of transport for those who wanted to get to the city was by river. An iconic and historical place for the townspeople, where the main part of the event will take place. Start at 25 km. It is carried out from the water along the left bank of the Irtysh River in the city of Khanty-Mansiysk, swimming around the island of Starocheremkhovsky, the route passes through the confluence of the Ob and Irtysh, then along the coast along the Ob to the village of Belogorye. The current speed of 4-6 km/h, comfortable water and individual support are all you need for a swimming marathon.