Strel is a large, middle-aged man from Slovenia, who was raised in a village called Mokronog, which means “ wet feet ” in English.
Strel has always loved swimming.
He swam in pools, ponds and small rivers as a young boy.
As he grew older, Strel began swimming in a larger rivers and soon became the world’s best marathon swimmer.
Over the years, Strel has swum through more than 12,000 miles (19,300 kilometers) of the world’s longest rivers, from Europe’s Danube to China’s Yangtze.