Killarney works as a base rather than as a place to spend the day. It sits at one end of the Ring of Kerry, and what is worth the stop is on the way in and out — Muckross Abbey, and the town itself. We plan two nights here rather than one, because the distances are short, the roads are narrow, and the value is in stopping often rather than covering ground.
The Dingle Peninsula is a different proposition. You cross the Shannon Estuary by ferry and then drive a small peninsula of coastal road out to Slea Head. The monastic sites on the peninsula are close together and roofless, which is why they combine into one day rather than competing with each other.
One thing we deliberately do not do here is give Killarney National Park its own card. It is a serious place and it is on the route, but the material we can stand behind is the abbey inside it, so that is what we write about.