If you can zoom in close enough on the satellite image to see your trail, you can map it yourself. Just uncheck "follow roads." It won't work if there's heavy tree cover or if there aren't high-resolution images, but from what I can see of the vicinity of Perth, you ought to be able to make it work.
www.mapmyrun.com
Or, if it's a trail that you might do several times but not often enough to remember it, you can do it the first time with a paper map or whatever, then upload your track and create a course or a track that you can use for future rides.
Last edited by OakLeaf; 10-29-2010 at 05:36 PM.
Speed comes from what you put behind you. - Judi Ketteler