Every single one of the cycling deaths in Ontario between 2006 and 2010 was preventable, according to a report from the office of the chief coroner.

This ghost bike memorial in Ottawa was created in memory of Danielle Naçu, who died nearby while cycling to work. (Giacomo Panico/CBC)

The report released Monday examined the circumstances around 129 deaths between January 2006 and December 2010.

Only 27 per cent — or 35 out of 129 — of the cyclists killed were wearing helmets.

The review found that 86 per cent of the cyclists killed were men. The peak age for cycling deaths was 45 to 54.

The report recommends implementing a provincial cycling plan, launching a public awareness campaign and making changes to legislation to improve road safety.

It also suggests making helmets mandatory for all cyclists.

Province updating cycling policy

Transportation Minister Bob Chiarelli said the province is updating its cycling policy and agrees with the coroner's principles.

"We will assess those recommendations in a timely manner while also considering timelines and budgets," Chiarelli said in a statement.

"We know how important cycling is for all Ontarians as a way to travel and as part of a healthy, active lifestyle ... we will be carefully reviewing the coroner's recommendations as part of that update."

The coroner launched the inquest less than two weeks after Ottawa cyclist Danielle Naçu was killed while cycling down a downtown street. She was struck by a car door and knocked into moving traffic.

With files from CBC News