Fastest helicopter speed over 100 km closed circuit

According to Official Guinness Records,

Roger André Eilertsen (Norway) achieved a speed of 225.41 km/h (140 mph) over a closed circuit of 100 km (62.13 miles) in Oslo, Norway, on 13 November 2005. He piloted a Robinson RH44 rotorcraft with a take-off weight between 500 and 1,000 kg (without payload).
The FAI sub-class for this record is E-1b (Helicopters: take off weight 500 to 1000 kg); General; Group 1: piston.

For a complete list of 2005 records, please visit 2005 Guinness Records in Norway.

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