Two brothers in Wainuiomata had a lucky escape on Saturday night.

A 22 year-old man and his brother were riding together on a motorbike when it went off the road and down a bank, shortly before 11pm. They spent three hours stuck down the bank, unable to get back up onto the road because of serious leg injuries.

A local farmer and daughter riding past spotted the pair and alerted emergency services.

The men were both airlifted to Wellington Hospital where they are being treated for their injuries.