This remarkable article looks at how age is an actual advantage in races these days.  In these days where we are seeing more participants in marathons, iron-mans, and ultra marathons, we are also seeing the age of participants and finishers go up.  Thus, I think this will be motivational for everyone to read.  It is true, you never reall get "old." 

Definately a must read and not time consuming either so check it out.

http://www.heraldsun.com/pages/full_story/push?article-Age+an+advantage+in+some+sports%20&id=4849397-Age+an+advantage+in+some+sports&instance=main_article