timburke68 wrote:any idea how long a return trip would be going this way?
You probably won't do it under 13 hours unless you walk very fast or run, so don't plan it as a day walk except in midsummer.
Most people would take a day to walk in, camp near Pelion Hut (or within a few km), spend a day going up and back, then walk out on the third day.
Chapman has a book with good notes on the whole trip, with reasonable estimates of travel times, not allowing for stops.
3.5hr Arm River to Pelion Hut.
6hr Pelion Hut to Mt Ossa and back (you should allow longer to check out the views).
3.5hr back to Arm River.
You could do it with one overnight but you shouldn't plan to camp anywhere near the halfway point of the trip.
