Trent Wayne Porter and Robert John Riley were sentenced in Armidale Local Court on Tuesday afternoon to an additional 12 months on top of their current prison terms.

The pair were on the run for about 18 hours and sparked a police pursuit before they were captured hiding in an Armidale house on October 27.

In sentencing, magistrate Michael Holmes convicted the pair of all charges, ordering 12 months on top of their sentences, backdated to October for Riley, and February, next year for Porter, who was behind the wheel of the stolen car.

Porter pleaded guilty to the seven charges including escaping lawful custody, taking and driving a stolen conveyance, larceny, police pursuit, using an unregistered and uninsured car and entering inclosed lands.

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Riley pleaded guilty to five charges including escaping lawful custody, being carried in a stolen conveyance, larceny, custody of a knife and entering inclosed lands.

Police conducted a large scale manhunt for Riley, aged 49, and Porter, aged 32, after they fled the Glen Innes Correctional Centre on the Gwydir Highway about 4.30pm on October 26.

The following morning, the pair were in a car which failed to stop, sparking a pursuit on the New England Highway at Armidale at about 10am. 

Extra police were called to back up general duties police, and the car was then abandoned in Beardy Street. 

Police searched the area and found the pair hiding in a nearby house where they were arrested.