http://www.mythicalireland.com/Brigid...

The recently established Brigid's Way Celtic Pilgrimage is based upon a fascinating alignment of ancient sites, connecting the place where Brigid was born with the place where she founded her monastery, an alignment discovered by Anthony Murphy and Richard Moore during research for their acclaimed book 'Island of the Setting Sun: In Search of Ireland's Ancient Astronomers'. Using Google Earth, author Anthony Murphy looks at the stunning precision of the alignment, which runs directly through Mount Oriel, Hill of Slane, Realtoge hill, and the Hill of Tara. It stretches for 65 miles / 105 kilometres. Those who walked the inaugural pilgrimage in July 2013 did so over nine days.