The Blue Mountains barely needs an introduction when it comes to trail running but it can be a bit daunting at all the options.
We find All Trails is a great resource to give you information about trails, difficulty and distance.
After putting off running in the Blue Mountains for literally years, after two trips this year, I'm looking for more opportunities. I don't know what it is about it, the terrain is hard, but the views spectacular (and not just from the top, the views from the bottom are equally spectacular if not more).
My tip is to get a few friends together, and do a day trip at least. It's worth it and you can't really go wrong.