Auckland council describes the trail as “a self-guided four day tramp through 77km of native forest and along the wild coast of the Waitakere Ranges Regional Park. It connects various park tracks and basic backcountry campgrounds.” The route can be found here.
Earlier in 2014 I ran part of the trail with my friend Rob. We did a 10km in/out from Arataki and is fair to say destroyed me. I could barely walk for a week afterwards.
Now I – and you – have the opportunity to run it in March 2015. My friend is twisting the thumb screws to do it.
Check it out, here: http://thehillary.co.nz/wordpress/