Boys 4x400
Hawthorne (Ca.) High went a record 3:07.40 in 1985. And while a one second difference between the next best and the record seems slight, it's bigger than you think. Miami Northwestern has a ways to go if it wants to challenge for a sub-3:10 time, too.
Closest overall: New Bern (NC), 3:08.05, 2009
Closest in 2017: Miami Northwestern (Fl.), 3:10.56 -- pictured