How long is one of the races the horse Rock Fall won?
Rock Fall (horse): Rock Fall (foaled March 19, 2011 – October 10, 2014) is a racehorse best known for winning Alfred G. Vanderbilt Handicap, and the Vosburgh Stakes Alfred G. Vanderbilt Handicap:  A Grade I event open to horses age three and older, it is a six furlong sprint raced on dirt.
six furlong sprint