Dublin to Kilkenny stopping at Powerscourt and Glenalough

You can probably visit one, but not both. On separate trips I went from Dub,min to Kilkenny, once stopping at Powerscourt, the other Glendalough. Both times we arrived in Kilkenny late afternoon (around 4 PM).

I did both about a week and a half ago--stayed about an hour and a half in each place, and arrived in Kilkenny late afternoon.