The Donatus-Lauf is a running event held around Donatus Lake in Erftstadt-Liblar, offering races for adults, families, walkers, and children. The longest distance is a half marathon, with other options including 10 km, 5.5 km, 1200 m, and 400 m.
The schedule places longer and faster races first: the half marathon begins in the late morning, followed by the 10 km at midday. The family run and Nordic walking start later. Younger participants have their own Bambini and school races, such as the Volksbank Rhein-Erft Köln children’s run, ensuring participation from small children up to adults competing in the half marathon.