Tony: the FAI Class C, Group 3 (Landplanes with jet engines) Record for Speed over a 3 km Course at restricted altitude is indeed still held by Darryl Greenamyer in the Red Baron Racing Team's F-104RB Starfighter -- 858.77 kts, set at Mud Lake, Tonopah, Nevada on 24 October 1977. The ultimate, unrestricted-altitude closed circuit-record is 1,609.88 kts, set ten years earlier in a Mikoyan E-266, a specially-built version of the MiG-25 Foxbat. Outright straight line speed for air-breathing engines is still held by the Lockheed SR-71A Blackbird at 1,905.81 kts.