The Westpac Rescue Helicopter was called to three separate incidents, including two rescues, on Sunday - an injured tramper, a hurt motocross rider, and a car down a bank off the Rimutaka Hill.
A 28-year-old Wellington man was injured at a motocross event in Te Ore Ore, Masterton, about 12.30pm.
Life Flight crewman Dave Greenburg said the man had come off his bike on a hill, injuring his back and abdomen.
The rider was conscious when they arrived and the paramedics administered pain relief, he said.
The man was being cared for by event organisers at the scene, before he was stabilised and airlifted to Wellington Hospital.