I read this article in the NY Times about changes in marathon training programs and thought distance riders might find it interesting. Obviously one cannot compare human and equine training programs directly, but I believe there are some parallels.
http://www.nytimes.com/2007/05/31/fashion/31FITNESS.html?em&ex=1180843200&en=6891754db6dcc7b7&ei=5087%0A
