DC Wonk wrote:
Speed becomes more and more difficult as you age obviously. Endurance and strength can be maintained a lot longer. For a 50 year old male to run a 4:59 mile, that age grades to 85.11%, which is above what most runners are doing at that age. That same 50 year old would have to run about a 2:44 marathon to reach the equivalent 85% age grade, or a 16:57 5k. How many 50 year olds at your local races are hitting that time?
So yes, running sub-5 at age 50 is an accomplishment to be proud of.
Au contraire, monsieur. This (bold above) isn't as black and white as you think. Statistically age group records are closer to their actual/full records in the shorter distances suggesting speed CAN be maintained in someone's advanced years, perhaps even easier than long distance ability.
A big part in this misconception is that as people age they just tend to focus on longer, and longer events. A 50yr old who actually did decent weight & sprint training would actually be very fast, it's just that most 50yr olds don't do this, instead they just sign up for ultra's and shuffle away blaming slowing down on old age which is only partly true.