going back more than 10 years, but these are top places for carlsbad 5k from 2000-2016. you can see a few things: 1) sub-15, while impressive, is not rare, at least by my definition of rare (for rare, i think of h.s. sub-4s, even now, or h.s girls sub-10 in 3200. others' definitions of rare may be different); 2) i think there's proof that skills do not diminish automatically post-40, regardless of ability--andrew duncan comes to mind in these results, and if you went deeper, you would have seen several of my 16:00 teammates hold fitness through mid-40s relatively well; 3) at least a couple of drug-cheats (eddy, castille), and some olympians (scott, wade, fell, probably others i'm unaware of), yet their times were matched by ostensibly clean athletes (that cushing-murray kid--you'll have to take my word for it, others?).
that's my story and i'm sticking to it....
cush
Simon Karori 13:58
Jon Sinclair 14:54
Steve Scott 14:57
2000
----------------------
Simond Karori 14:12
Eddy Hellebuyck 14:34
Graeme Fell 14:35
2001
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Eddy Hellebuyck 14:47
Danny Martinez 14:50
Sam Ngatia 14:50
Jon Sinclair 14:52
Peter Magill 15:20
2002
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Eddy Hellebuyck 14:38
Dennis Simonaitis 14:38
Alfredo Vigueras 14:41
Brian Pope 14:56
Tony Young 15:12
Peter Magill 15:16
2003
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Peter Magill 14:51
Brian Pope 14:52
Danny Martinez 14:54
Alfredo Vigueras 14:56
Dennis Simonaitis 15:06
2004
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Brian Pope 14:57
Danny Martinez 15:01
2005
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Sean Wade 14:53
Dennis Simonaitis 15:03
Peter Magill 15:10
2006
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Dennis Simonaitis 14:54
Alan Newton 15:06
Peter Magill 15:11
2007
----------------------
Dennis Simonaitis 14:47
Peter Magill 14:50
Christian Cushing-Murray 15:38
Andrew Duncan 15:50
2008
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Christian Cushing-Murray 14:55
Alejandro Salvador 14:57
Simon Gutierrez 14:58
Dennis Simonaitis 15:06
Andrew Duncan 15:27
2009
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Christian Cushing-Murray 14:40:00
Dennis Simonaitis 14:45:00
Leonel Avalos 15:13:00
2010
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Christian Cushing-Murray 15:04:00
Chad Newton 15:10:00
Dennis Simonaitis 15:11:00
Charlie Kern 15:13:00
Andrew Duncan 15:22:00
2011
----------------------
Kevin Castille 14:57:00
Christian Cushing Murray 15:30:00
Tim Gore 15:31:00
Andrew Duncan 15:42:00
2012
----------------------
Christian Cushing-Murray 15:40:00
Rusty Snow 15:42:00
Tim Gore 15:46:00
2013
----------------------
Tim Gore
15:19:00
2014
----------------------
Greg Mitchell 00:14:58
John Gardiner 00:15:22
Nazario Romero 00:15:28
Christian Cushing Murray 00:15:37
2015
----------------------
1 16989 Christian Cushing Murray 15:11
2 16987 Greg Mitchell 15:15
3 16990 Jeremy Deere 15:18
4 16988 John Gardiner 15:21
5 17067 Neville Davey 15:24
6 16343 Jacques Sallberg 15:31
7 17053 Andrew Duncan 16:08
8 15381 Pete Magill 16:08
2016