Motorcyclist found 15 hours after crash

Gus McCubbing

A man found by police 15 hours after crashing his motorbike in Victoria's southwest has been airlifted to hospital in a serious condition.

The 30-year-old frm Delahey had been riding with a friend on Colac-Lavers Hill Road before the pair were separated about 7.40pm on Saturday.

His friend raised the alarm when he failed to show at their planned meeting point, about 15 kms away.

He was found about 10.30am on Sunday having crashed his motorbike down an embankment.

Police and SES personnel searched the area overnight with a helicopter.