This is an Invitation-Only, No-Fee, Low-Aid race held in the Enchanted Forest Nature Sanctuary in Titusville, Florida the third weekend in December. The 2017 dates are Saturday-Sunday December 16-17, 2017. Race start time is 7:00 AM Saturday morning, and runners have 32 hours exactly to finish 29 loops of a 3.46-mile course for a total of 100.34 miles.
2015 Results at: ancientoaks100.com / Splits
2014 Results at: ancientoaks100.com
2013 Results at: ancientoaks100.com
2012 Results at: ancientoaks100.com
2011 Results at: ancientoaks100.com
2010 Results at: ancientoaks100.com
2009 Results at: mattmahoney.net
2008 Results at: mattmahoney.net
2007 Results at: mattmahoney.net
2006 Results at: mattmahoney.net
2005 Results at: mattmahoney.net
2004 Results at: mattmahoney.net
2003 Results at: mattmahoney.net
2002 Results at: mattmahoney.net
2001 Results at: mattmahoney.net
2000 Results at: mattmahoney.net
1999 Results at: mattmahoney.net