The new Gibbston Valley Track is a really good walk.  It was a bit hard to find off the main road as the signposting was not all that good, but once you are on it it is a good walk along side the Kawarau River.  If you start at Peregrine Winery you end up at the Hackett Bungy and from there headed to a winery for a meal.

For those people that visit the Shotover river area. The Oxen bridge walk is a short yet scenic visit to the bottom of the Skippers canyon.

See how the gold miners tunneled to get gold. See the photo below. If you ride the Shotover Jet. The walkway is immediately across the river from the jetboats.