Just three performances in the boys 4x400m relay over the past 10 years have eclipsed all-time efforts inside the top 35 nationally. Only two teams have produced those marks.
It's the same story on the girls side. Just two teams and two performances in the last 10 years have cracked the list.
Why? The 4x400m relay is one of the toughest races in track and field to produce a national best.
When the Miami Northwestern (Fl.) High boys converted on a time of 3:10.56 seconds this season at the Pepsi Florida Relays, it represented a new US No. 1 time and was the No. 3 best effort over the last decade, but it failed to break into the all-time top 35.
Union Catholic (NJ) High was the latest in the girls field to do it back in 2015. Sydney McLaughlin anchored the team to a time of 3:35.90, which stands No. 5 all-time, but No. 1 over the last 10 years.
While the Hawthorne (Ca.) High boys broke the national record 32 years ago with an effort of 3:07.40, it's stood the test of time and may do so u...
