You get onto the Nebo road from Waterworks Road, as you can see on Google. It quickly becomes an excellent biker's road with almost continuous bends. There's a bit of 80 kph but it's mostly 60 or advisory down to 20. When it advises 20, do 20 if you're still getting the hang of the ST. There have been rider fatalities on that road. The surface is quite good. There are two coffee shops at the Nebo township. Stop at the eastern one. The next one is really a poor excuse for a cafe. The road goes on out to Mt Glorious and over the back down to Somerset Dam. The back of Glorious is very twisty with several tight hairpins. The tricky section is 60 kph. A few kays before the Mt Glorious township there is a right turn down to Samford. Again, very twisty with some hairpins going down.
It's listed among the 10 top mountain rides in Oz in some places. The road surface on the east of Mt Glorious is the best. On the western side it can suffer from leaf litter. There are 3 coffee shops on Mt Glorious, the Maiala being the fave. All those roads are popular at weekends with the lycra loonies, and one m/c rider had a head-on collision with an out-of-control cyclist which ended badly for both.