Danube Ultra is a cycling challenge with a cause.

With a total distance of 740 km, the Danube Ultra is the longest tourist cycling route in Bulgaria. Its trajectory connects the northwesternmost settlement of the country with. Kudelin (municipality of Bregovo) with the northeasternmost settlement. Durankulak on the Black Sea. The route passes through 119 settlements near the northern border of Bulgaria. Danube Ultra is the winner of the Grand Prize “Innovation of the Year in Tourism”.

The creator of the route is Boris Begumov