B. BRAUN Marathon

The B. BRAUN Marathon, also referred to as the Donautal‑Marathon, is a scenic road running event centred on Tuttlingen and the Donautal. The race day is part of the Run & Fun Weekend and features multiple distances to suit a wide range of runners, from 5 km up to the full marathon and a 4‑person marathon relay. The course starts and finishes at the Festplatz in Tuttlingen and largely follows the Danube through the Donautal, offering predominantly gravel paths and sustained natural scenery.

The route is described by the organisers as relatively flat, with a total elevation change of about 28 metres on the lap used for the marathon. The marathon edition is run as a multi‑lap course (two laps for the full distance) and the weekend also includes half marathon, 10 km and 5 km races. Entry fees published for the event range by distance (for example €18–€50 for individual distances and approximately €90–€110 for the 4‑person relay); detailed start times and additional logistics are provided on the organiser's official race pages.