The most recent edition of this event was on 24 to 25 August 2017.
The Great Naseby Water Race is an annual ultramarathon event from Friday, 26 August to Saturday, 27 August 2016 with multiple laps around a 10km course.
The course is set around a 10km loop - the first half along a gravel road and the second half on a forest track beside the water race that gives the event its name. There is no actual water running.
This unique ultramarathon event takes place near Naseby - the highest town in New Zealand at 2000ft. Naseby is 15km north-west by road from Ranfurly and 145km north-west (via Middlemarch) from Dunedin. It is held on the last Weekend of August each year.