The line is OpenStreetMap's mapping of the route (© OpenStreetMap contributors, ODbL), via Waymarked Trails, with heights from a 30 m terrain model. Check the current official route before a long trip: diversions and permitted paths change. See the source.
The trail
St Kevin's Way from its second start, the church at Valleymount by the Blessington lakes: about 19 km by lanes and forest to Ballinagee Bridge, where it meets the route from Hollywood, then over the Wicklow Gap and down the Glendasan valley to Glendalough. The two starts reflect the directions medieval pilgrims came from. A day's walk, waymarked with yellow arrows.
Start and finish
Start: 53.10616, -6.52501
Finish: 53.01206, -6.32900
Paths change, and the weather decides the day. The line comes from the source named under the map and the heights from a terrain model, so treat the figures as a guide. Check for diversions before you go, take a map, check the forecast, and turn back if it isn't right.