The Keys100 Ultramarathon has a 50 mile option that I'm considering for my next 50 miler in 2011.

http://www.keys100.com/

http://runnerforgood.blogspot.com/

http://runwithme-cindy.blogspot.com/

http://lazybonesrunning.blogspot.com/

Music by Garageband, U.S. Marine Band, and Derek Miller's Penmachine

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