Air ambulance in Double 100 cycling challenge
Air ambulance organisers in Kent, Surrey and Sussex are signing up cyclists to take part in the charity's first Double 100 bike challenge.
The inaugural Double 100, on 3 July, will start and end at the air ambulance base at Dunsfold Park, Surrey.
The route will pass though all three counties, passing through Horley, Lingfield, Rusthall, Groombridge, Hartfield, Handcross and Horsham.
BBC Radio 2 traffic reporter Sally Boazman is backing the event.
She will be at Dunsfold to welcome the cyclists back and celebrate the day.
Cyclists will choose to cycle either cycle 62 miles (100km) or 100 miles and it is hoped the cycle ride will become an annual event.
Nearly half the missions flown by Kent, Surrey and Sussex Air Ambulance's two helicopters, based at Dunsfold and Marden, in Kent, are to road accidents.
The charity needs about £3.4m a year to keep the aircraft flying.
"Every day I see how the air ambulance saves lives," said Ms Boazman.
"The money raised is vital in maintaining this incredible service and I am proud and delighted to be part of it."