Originally Posted by zkzkz

Fwiw this is a very long day of driving too. It is possible to do but it's going to be already a significant drive to Cork and then a long day of driving ahead to get to Dublin.

Fwiw when I did Valentia Island from Dublin we broke the trip in half and did things on the way. On the second day stopped at the Foynes Flying Boat Museum and the Lartigue Monorail (though this did take us through some smaller roads). We did drive back to Dublin straight from Kerry in a single day but we didn't go via Cork or any other major stops.