Saint Declan's Way is a 115km pilgrim walking route linking Cashel in County Tipperary with Ardmore in County Waterford. It follows the route that Declan took when going to Cashel to meet Saint Patrick in the fifth century. In turn, it is the way that Pilgrims have taken to visit St. Declan's monastery, holy-well and grave in Ardmore for the past one and a half thousand years.

The trail starts at the Rock of Cashel and passes Cahir Castle and Lismore Castle. It finishes at the early Christian monastic site at Ardmore.