Hey there Darcy...

Unfortunately "junk miles" is one of those terms which can be interpreted as a put-down, like "comfort bike" to describe a "hybrid" or "town/city" bike.

By all the people I have heard use the term "junk miles", and in all the articles and books I have read that refer to "junk miles", I have never known it to be used in a derogatory way.

It's just another way to define the type of ride you have done... aerobic or anaerobic, hill reps or intervals, recovery ride or junk miles, sprint training or enduro miles...

And its not a term I will be ousting from my vocab, because it is just a way to describe the miles I got in today/this week/etc... It is a way that people over the English speaking cyclind world use, and I assume there is some similar term for non-specific miles put in with no training purpose in other countries...

Sorry if I am waffling on, but I just want you/whoever to realise that this term, which will undoubtedly be used again on this forum, is never a critique on anothers riding skills, or enjoyment... it is just a way to define a ride.