I ran the loop twice:
Overall time for 2 loops: 3 hrs 22 min 52 sec
Fastest Loop (2nd loop): 1 hr 38 min 52 sec; see att. picture
Nice loop around Eningen. Well marked. The uploaded gpx file of the route and the official route have very little variation. I stayed with the given gpx route.
Given the rain throughout the last days the route was only little muddy, could be very well run at all sections.
I ran by myself and carried all the supplies (water) with me.