Bad Belzig - Raben and back (17km/30km - 5km/h)

Hey,
I would like to go on a 1. of May challenge and try the 30ks looping from Bad Belzig and back.
There is an exit option after 17ks at Raben where the bus (Burgenlinie 572) is running back to Bad Belzig every two hours.
But of course it would be nice to finish the whole thing.
This is a fast pace hike if about 5km/h (think about being late for an appointment that’s the pace we’re going for)
Bring food/drinks and a possible raincoat.
We will make 2stops approx. More depending on the crowd.
Here are the details:
Train RE7 from Berlin Hbf at 10:14Uhr (I'll get on the train at Charlottenburg)
Reach Bad Belzig at: 11:17Uhr

This is the route:

To Be Added…