Mattoni Running Festival Ústí nad Labem is a September road-running event in Ústí nad Labem, an industrial city in Northern Bohemia, Czech Republic. The main event is a World Athletics-certified half marathon covering 21.097 km. A 10 km race, half marathon relay, Family Mile, and Bambini Run are also part of the program. RunCzech organizes the event. The half marathon course is flat and fast, often called “the Ferrari among races.”
The route follows the Elbe River and includes a unique section: runners pass through the Spolchemie chemical factory, amidst its pipes, tanks, and industrial structures. This creates a contrast between the factory setting and the greener areas of the city. The event has been held since at least the early 2010s, known for fast times, personal bests, and records, not for challenging terrain.