3 laps of undulating private roads within the picturesque grounds of Blenheim Palace. There is one main hill at 2, 6 & 10 miles. Water will be available on the course in cups at the start of the second and third loop and also at the top of the main hill near Combe Gate. During the Woodstock 12, the hill up to Combe Gate brings the runner into High Garden, an ancient and undisturbed part of the Blenheim estate. Entries on the day from 8:45am.