The Old Mountain Road walking track is a straightforward walk along a historic (unsealed) road, built in 1860 during a gold rush. There are remnants of poles and wires along the route, and views of the Bogong Peaks Wilderness Area from near the end. It’s a steep 4km ascent from Jounama Creek Campground to the turnaround point at the Snowy Mountains Highway, and you can do the Jounama Creek Track from the same starting point. There are track notes on the NPWS website, and in this NPWS brochure, which describes the walk as a one way descent from the top.
A shortish but steep walk up a historic disused road in Kosciuszko NP near Talbingo. There are partial views near the end of high peaks in the Bogong Peaks Wilderness Area.