A 6-year-old motocross rider received chest injuries when he was run over after falling from his machine during a race near Martinborough on Saturday.
Martinborough senior firefighter Dean Dibona said a volunteer fire crew went to the scene at a Hinakura farm on Longbush Rd, where an off-duty paramedic was treating the boy about 11.30am.
Mr Dibona said he was told the boy had fallen from his motorcycle during a supervised event at the race day, which was being held on a farm property.
A competitor in the race had unintentionally ridden his machine across the boy's chest after he fell, Mr Dibona said.
He said the paramedic was a volunteer at the event and the boy was treated at the scene before he was taken by the Life Flight Westpac rescue helicopter with moderate injuries to Wellington Hospital.
