Originally Posted by Sixty Fiver

It depends on the season...

Our summers are warm and dry with little rain so I can go about 400 km between chain cleaning / servicing while in the winter it might be cleaning and re-lubing the chain on a daily basis.

My dedicated winter bike gets torn down and re-greased every three months while other bikes will get a yearly tune up unless something is needed.

I regularly check my bikes to make sure things that everything is working properly which is a matter of pre-ride safety.