12. Hörner Bruch Ultramarathon 43,8 km

Nestled in the heart of Osnabrück, runners will find an intriguing race that combines urban exploration with a unique challenge. The starting point and finish line are situated under the railway bridges at Limberger Strasse 102 or near its intersection with Vogeler Strasse, just a short walk away from these landmarks.
One of the highlights of this event is the vibrant graffiti art known as Musikexpress, which stretches an impressive 190 meters along one of the building facades nearby—Europe's longest street mural. Participants have the flexibility to start anytime between 5:00 AM and 11:00 AM on race day.
The ultramarathon course covers a flat terrain with just 60 meters in elevation gain over its entire length, making it accessible yet challenging as runners complete six circuits totaling 43.8 kilometers against the clock direction. Detailed track information can be found through Komoot and Garmin links provided by organizers for both winter and general weather conditions.
Participants are responsible for their own hydration and nutrition needs, with each lap bringing them back to a nearby parking area where they can restock supplies from their vehicle if necessary. The race adheres to the 100MC counting rules but allows runners to decide whether or not to claim this distance officially in ultramarathon statistics.
Race results will be posted on Race Result and participants must submit their total time via email, SMS, or WhatsApp by no later than 8:00 PM. All competitors are reminded of the importance of adhering to course rules regarding environmental protection and safety measures during the event.
Registration for this unique race requires a declaration from each participant that they have prepared adequately and are in good physical health for such an extensive distance run. The organizers reserve the right to modify any aspect of the event, including start times, distances covered, or awards distribution based on operational needs. Participants must also agree not to alter the course route or leave waste behind; doing so will result in immediate disqualification.
By entering this race, participants acknowledge that they are participating at their own risk and release organizers from liability for any accidents, injuries, thefts, or damages incurred during participation. This event offers a blend of urban adventure with artistic appreciation and physical endurance testing, making it an unforgettable experience for serious runners seeking both challenge and cultural immersion in Osnabrück's vibrant setting.
This ultramarathon is organized by the 100MC club under their rules set forth in 2025. However, participants should note that according to DUV regulations, only distances of 45 kilometers or more are recognized as official ultramarathons for record-keeping purposes within this organization.
For those interested in pushing personal limits while engaging with local culture and artistry, the Osnabrück railway bridge race presents a unique opportunity to explore both physical boundaries and urban aesthetics.