The Course des 2 Viaducs is a 10 km race held in Le Blanc, located in the Indre department of Centre-Val de Loire, during early December. The start is positioned 800 metres before the finish line, at the summit of a viaduct, with the finish located within the stadium. This is a precisely measured 10 km route, suitable for runners aiming for a fast time and for local participants seeking a straightforward, manageable winter race.
The majority of the course utilizes a paved greenway established on a former railway line, featuring viaducts that lend the race its name. The route descends approximately 30 metres in total, with most of this drop concentrated in the final two kilometres. Fields typically consist of several hundred participants, and the race has seen over 400 registered runners. Yoan Kowal holds the course record at 28:39, and Mohamed Benyettou has won with a time of 29:41.