Early Sunday morning a massive crash in an amateur race for master’s age riders in Australia took down 15 riders, with 6 treated for injuries and 2 emergency medical helicopters arriving to assist.

The crash occurred in Ku-ring-gai Chase National Park north of Sydney around 07.45 during the West Head Road Race, organized by the Manly Warringah Cycle Club.

“NSW Ambulance engaged a number of resources, including two helicopters with medical teams on board, extended care paramedics and paramedics to assist in the response,” New South Wales Ambulance announced.

The six riders, all males in their 40s, were being transported to hospital for injuries which ranged from serious to minor, including head, chest, collar bone and shoulder damage.

“A man aged in his 40’s who suffered head, shoulder and chest injuries, continued to receive treatment by CareFlight’s specialist doctor as he was taken by road ambulance in a stable condition to Royal North Shore Hospital,” CareFlight said.

Photos: NSW Ambulance, CareFlight