More commonly known as the Ring Of Kerry. Undoubtedly the busiest section of the SWI500 with an inordinate number of tour buses setting out from Killarney. However travel in a clockwise direction,  you'll not get stuck behind them and you'll enjoy a mix of challenging & fast roads and fantastic views. A 179Km long and full day out.

Two gpx files are available here ; one for the ring of Kerry itself and one for a challenging route over 3 mountain passes.