Boys 4x200
Fort Worth Wyatt (Tx.) had a remarkable season together in 1998, logging a national record in the 4x100 and also in the 4x200 relay, where they went 1:23.31 seconds.
Closest overall: Cleveland Glenville (Oh.), 1:23.78, 2004
Closest in 2017: George Ranch (Tx.), 1:24.47 -- pictured