I agree but there are a couple of potential downsides. I've done the Marysville Cambarville Warburton ride on a mountain bike (without lockout
) with a backpack some years ago as part of a 3 day tour from Lilydale. The climbing doesn't faze me as I'd go mid week although you're straight onto the CC climb without a warmup if starting in Warburton. I'd also choose a coolish day like yesterday to begin early and have sufficiently low gears for these ageing knees.
The roads around there are a favourite haunt for motorcycles so you are mixing it with guys who want to explore the cornering limits and speed of their bikes. It's amazing how quickly they can come upon you without sometimes a chance to move over. I would definitely not do a weekend circuit as it is Gran Prix central on the Cambarville Reefton section. Even yesterday we encountered a few bikes. They're a friendly bunch though and one or two stopped to inquire if we were ok when taking a road side breather.
Another potential downside for some is that there is a section on the same stretch that has been recently laid with new tarmac. The stones were sticking to our tyres and as cyclotaur experienced with his close clearance frame and larger 28c tyres, stones get stuck and jammed against tyre and frame immediately stopping any progress. Going down could be hazardous. One other thing to consider is that you will need probably more water or fluid for the Marysville McMahons Creek section on a warm day as there is no water /shops through there until you get back to the Reefton pub which is 44 kms from M'ville. I'd take an extra bidon in my pocket or use my fast tourer with 3 bidon cages. As we both wrote earlier, the Acheron Way was the highlight of the trip for us. Every cyclist should do it as it offers sealed and unsealed suitable riding conditions through a lovely forested area with little traffic. There is even a place alongside the Acheron river to dip your feet on a warm day.