If running alone is too boring for you, maybe triathlon with the combination of swimming, running and cycling is more interesting for you.
Triathlon is not offered as a sport so far in university sports in Mannheim, the three individual sports each already.
You will meet experienced triathletes at the running group who like to support you during the training sessions with tips and tricks, enabling you to get into triathlon quickly.
The swimming and cycling training then takes place in the respective courses in university sports, or at agreed times. Just for details.