Ran a 30 km in Indianapolis in about 1983 or 4, and one of the Guntch's was in it, took over 12 miles to catch her. My wife eventually caught her, too, and passed her for the win. My wife remembers the two guys pacing her, her dad being one. The girl was slowing and tiring, but dad was turning around and running backwards, just to confirm that my wife was truly a female catching up on her. She didn't drop out, though, because there was a record of some kind that her dad wanted her to get.