We ran Stage 1 of the Westweg: From Pforzheim to Dobel.
Distance based on Wikipedia link (FKT Route description) is app. 24km. Our 26km was slightly longer because we started already at Pforzheim Railway Station (We parked the car in Dobel and took public transport to Pforzheim Railway Station).
Conditions were good for that time of the year, only heavy rain towards the end.
The trail is decently marked.