Lentor, 20 km. I’ve been fiddling with my derailleurs as shifting seems to be deteriorating. Fiddling to no avail. Then, as penance for neglecting my ride (while training for an ultra marathon), I lube the chain.
Presto, shifting improves like new.
Now, if only I’d stuck to the schedule of tender loving care for drive train after a specified distance or a messy ride, whichever comes first.