37. Leipziger 100 km Lauf am Auensee

The Leipziger 100 km Lauf am Auensee is an August ultramarathon held in Leipzig, featuring a 100 km race where participants complete a 10 km circuit ten times. This event has been held annually since 1990, organized by Laufclub Auensee e. V. Leipzig. A 50 km road race is also part of the program, meaning the event focuses on two long-distance races instead of a single marathon field. The start and finish lines are located at the August-Bebel-Kampfbahn stadium in Wahren, close to Auensee and the Leipziger Auenwald. The course winds through the Auenwald, consisting of approximately 70 percent paved forest and park paths and 30 percent asphalt. It is measured using a Jones Counter according to IAAF guidelines, qualifying as an official road race and eligible for record lists. Each lap involves only 15 meters of elevation gain and offers ample shade, contributing to a controlled pace for the long distance. The Auenseemarathon was held in the same location prior to the inception of the 100 km race, and Leipzig has previously hosted German championship races for both 100 km and 50 km distances on this course.