The first man in the world who decided to run the entire three-thousand-kilometre long coastline of the Danube, Pál Hidvégi-Üstös, a Hungarian athlete, started off on the 21st of September from the source of the Danube. The athlete ran through 10 countries to the Black Sea, where it is scheduled to arrive on December 8th. The marathon is organised under the patronage of the Ministry of Foreign Affairs and Trade of Hungary, which also holds the Presidency of the Danube Region Strategy. The extreme sport achievement aims to highlight the importance of environmentally friendly transport and other messages of the Danube Region Strategy Program (https://www.danube-region.eu/). The pictures have been taken by Levente Gyula Sass, the Hungarian consul in Chisinau, who accompanied the athlete at the Moldovan coast of the Danube (about 0.6 km, 0.29% of the whole road, at the Giurgiulesti port), from Galati, Romania to Reni, the Ukraine.