WPIAL Boys’ Swimming & Diving Champions – 400-Yard Freestyle Relay
| Year | 3A | 2A |
| 2023 | Mt. Lebanon (Andrei Tudorascu, William Stilley, Sangay Lama, Chase Dustevich) |
Kiski Area (Justin Tucker, Landon Seman, Parker Sterlitz, Levi Hansen) |
| 2022 | Seneca Valley (Kevin Donaldson, Gavin Blazer, Zach Lozowski, Daniel Simoes) |
Riverside (Joseph Roth, Sam Kline, Ryan Turner, Alexander Roth) |
| 2021 | Seneca Valley (Kevin Donaldson, Gavin Blazer, Haihan Xu, Daniel Simoes) |
Riverside (Alexander Roth, Hayden Panek, Ryan Turner, Joseph Roth) |
| 2020 | North Allegheny (Rick Mihm, Joshua Galecki, Ethan Song, Alex Grahor) |
Indiana (Kyle Thome, Issac Griffith, Kevin Zheng, Cole Thome) |
| 2019 | North Allegheny (Joshua Galecki, Branko Kosanovich, Anatole Borisov, Joel Songer) |
Indiana (Kyle Thome, Issac Griffith, Kevin Zheng, Cole Thome) |
| 2018 | North Allegheny | Northgate |
| 2017 | North Allegheny | Northgate |
| 2016 | North Allegheny | Quaker Valley |
| 2015 | Upper St. Clair | Quaker Valley |
| 2014 | Upper St. Clair | Mars |
| 2013 | North Allegheny | Mars |
| 2012 | North Allegheny | Shady Side Academy |
| 2011 | Upper St. Clair | Shady Side Academy |
| 2010 | North Allegheny | Shady Side Academy |
| 2009 | North Allegheny | Shady Side Academy |
| 2008 | Mt. Lebanon | Shady Side Academy |
| 2007 | Peters Township | Shady Side Academy |
| 2006 | North Allegheny | Shady Side Academy |
| 2005 | Mt. Lebann | Shady Side Academy |
| 2004 | Central Catholic | Shady Side Academy |
| 2003 | Central Catholic | Shady Side Academy |
| 2002 | Bethel Park | Shady Side Academy |
| 2001 | North Allegheny | Shady Side Academy |
| 2000 | Bethel Park | Shady Side Academy |
| 1999 | Bethel Park | Hampton |
| 1998 | Bethel Park | Hampton |
| 1997 | Gateway | Hampton |
| 1996 | Bethel Park | Elizabeth Forward |
| 1995 | Bethel Park | Elizabeth Forward |
| 1994 | Bethel Park | Elizabeth Forward |
| 1993 | Bethel Park | Elizabeth Forward |
| 1992 | Bethel Park | |
| 1991 | Gateway | |
| 1990 | Upper St. Clair | |
| 1989 | Bethel Park | |
| 1988 | Bethel Park | |
| 1987 | Bethel Park | |
| 1986 | Bethel Park | |
| 1985 | Bethel Park | |
| 1984 | Mt. Lebanon | |
| 1983 | Bethel Park | |
| 1982 | Bethel Park | |
| 1981 | Bethel Park | |
| 1980 | Upper St. Clair |
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Collegiate Partners
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