Recently there was a new Drone speed record set. The record was done by the team at Drone Racing League (DRL).
This is from the UAVCoach.com site:
"To set the record the DRL team needed to fly the RacerX back and forth across a course of 100 meters (328 feet), with the official record set as the average of the top speed achieved on each of those flights. This means that although the RacerX achieved a speed of 179.6 mph, the official record is for an average of its speeds over the course, which is 163.5 mph (which still, as an engineer might say, super duper fast)."