The route can be swum in either direction. Our course starts on the North Island and finishes on the South Island (which just happens to be North of the starting point).
The route has very little shipping traffice to worry about. However, many swimmers do encounter swarms of stinging jellyfish. And 1 in 6 swimmers do see a shark.
The water temperature ranges from 57 to 66 degrees F (14 to 19 degrees C) and extreme tidal currents are common.