Pulled the bike down after the weekends HCR ride having noticed a drive chain noise and not much rear brake.
Turned out the rear brake pads are shot and the front sprocket nut was loosed held only by the folded over washer.
The front sprocket is also on the way out.

Rear brakes 1mm to spare

Front sprocket on the way out
Having done regular maintenance the HCR distances put a strain on the machine unlike other rides nearer to town.
This was a timely reminder for me to do more diligent maintenance prior to riding in the High Country given the state the bike came back in after one 200K HCR ride day.