Two other trail riders were airlifted to hospital following accidents today.
The Palmerston North-based Rescue Helicopter was called to a trail ride south of Foxton after an 11-year-old boy injured his leg in a motorbike accident.
He was stabilised on scene by St John paramedics before being airlifted to Palmerston North.
The helicopter was then called to a trail ride near Foxton, where a man in his 20s had suffered leg injuries in a fall from his motorbike. He was also stabilised and airlifted to Palmerston North.
Earlier, the helicopter was called to Taihape after a man in his 20s inhaled fumes from a fire extinguisher. He was stabilised and airlifted to Wanganui Hospital.
Further south, the Life Flight Trust was called to Wairarapa after a beacon activation.
The crew found a local farmer in his 50s had rolled his digger about 50m down a bank after the dirt road he was driving on gave way.
A Wellington Free Ambulance paramedic was winched down to the man, who was placed in a winch stretcher with the help of local farmers.
He was flown to Wellington Hospital with moderate injuries.