Allow 5 to 6 hours for the full cycle between Alexandra and Roxburgh Dam. There is 21km of riding then a 13km jet boat ride then another 11k ride. The jet boat ride is very special, you’ll get to see rare sight hidden deep in the gorge. The cycle track is a very smooth 2.5m wide gravel surface, with marker posts every km. From Alexandra the cycling is down river, which gives you a slight down hill pedal with the one and only small climb at the 5km post. On the return journey it is the reverse, a light uphill pedal most of the way.