It happened on the B3081 near Verwood - he had to be cut free by firefighters.
Teenager Hurt In Possible Hit And Run
Officers from the Totton Roads Policing Unit are appealing to the driver of a silver car to contact them after a 14-year-old Dorset girl was found seriously injured on a Hampshire road.
The teenager, from Ferndown, is ranked in the top three for her age at triathlon.
At about 5.30pm Sunday, October 21, the girl and her father were cycling home after a training session.
They cycled on Crow Hill, towards Christchurch Road, near Ringwood, when the girl pulled away from her father and crested the hill.
When she was out of sight, her father was aware of a silver vehicle behind him. This vehicle overtook him. As her father crested the hill, he found his daughter lying in the road.
She was taken to Southampton General Hospital, where she was found to have head injuries, a broken collar bone and multiple abrasions.
RPU Sergeant Richard Grant said police need to establish whether the silver vehicle was involved or whether the girl simply came off her cycle. He said:
“We want to speak to anyone who may have seen the cyclists before the incident or who may have witnessed it.
"In particular, we need to speak to the driver of a silver vehicle which was travelling in the same direction and overtook the cyclists shortly before the girl was found lying in the road, injured,” .
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