Transcript of an interview on Virginia Public Radio:

https://www.wvtf.org/2022-12-11/world-cup-referees-must-meet-rigorous-fitness-standards

Key snippet:

SOONG: So the first test is called a repeated sprint ability test, and it is six repetitions of 40-meter sprints. And the standards for international referees is six seconds or faster for male referees, and 6.4 seconds or faster for female referees.

RASCOE: OK, 40 meters - so now for the people who are in the U.S. and use the - don't use the metric system, like, how far is that?

SOONG: (Laughter) Let me see. I mean, if you watch the Olympics, you know, the 100-meter sprint - so it's like a little less than half of that.

The guest does not give a conversion to Customary.