Ninety Mile Beach is a bit misnamed: it’s not actually 90 miles long in either New Zealand or Australia.

Quick Scoop

  • In New Zealand (Northland), “90 Mile Beach” is about 55 miles long, or roughly 88 km.
  • In Victoria, Australia, “Ninety Mile Beach” is about 94 miles long, or roughly 151 km.

So the answer depends on which 90 Mile Beach you mean:

  • New Zealand: ~55 miles / 88 km.
  • Australia: ~94 miles / 151 km.

Information gathered from public forums or data available on the internet and portrayed here.