The Roxburgh Gorge Trail is actually two trails with a gap in the middle which must be done by boat. Many people just do both ends as out-and-back trails. This is the south end out-and-back trail which starts and ends near the Roxburgh dam. You go up the gorge for nearly 12 km to the jetty, then return.
The trail is excellent - wide, well formed, smooth and never very steep. But there are a lot of switch-backs and quite a bit of gentle climbing and descending as the trail winds its way along the side of the gorge. The scenery is awesome. The gorge is steep, arid and stark and the blue waters of Lake Roxburgh are always below.