One of the best trails I have ridden in years (and I've been all over). Fun, challenging without being a pain, so much variety, no boring bits. I gave it 5 stars overall because the run back from the Springs to Glenorchy just flows and flows every step of the way. So clearly designed by riders for riders. Had me laughing out loud to myself.
Take the editor's advice and ride it from Glenorchy if you plan on riding it in both directions, it essentially climbs from Glenorchy to the Springs (on Mt Wellington) and wouldn't be as much fun if you had to climb back.