A NSW man, 66, has died after a motorcycle crash 11 days ago near the Queensland-South Australia border.

A 66-year-old NSW man has died after crashing his motorcycle near the Queensland-South Australia border.

The Port Macquarie man died on Tuesday, 11 days after he was injured in a crash on the Birdsville Track at Marree, 100km south of the border.

He was flown to the Royal Adelaide Hospital but did not survive the injuries he sustained.