Day one - Lawrence to Hanmer is 580km (363mile)
Day two - Hanmer to Brightwater and return is 280 each way so 560km (350mile)
Day three - Hanmer back to Lawrence is another 580km (363 mile)
Day 4 - Lawrence to Dunedin and return is 94km each way so 188km (118mile)
Total for just here to there and back is 1908 KM (1193mile) without the side trips etc that we did on the way and a great deal of the run from Hanmer to brightwater is the Lewis Pass through the Southern Alps and up the long Murcheson Gorge which all has a multitude of tight windy road with many many corners in the 35 to 55km speeds (20 to 35mph) and a few [places where it is one way due to the narrow bridges etc so the actual milage does not fully reflect the driving time and concentration needed to do these roads.