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Maui, Hawaii, USA - 727.2 square miles.
Kauai.
Kauai is geologically older than Maui. Kauai is estimated to be around 5.1 million years old, making it one of the oldest Hawaiian islands, while Maui is estimated to be around 1.3 million years old.
No, these are two separate islands.
Kauai
3,978 miles
By plane.
85 miles
you will visit Oahu, the Big Island, Maui and Kauai.
It depends what kind of vacation you want to have.
Maui has an area of 727.2 square miles (1,884 km²).
Visit Maui. I was on there and it is more calm and quiet while still having lots of fun activities to do.