According to Google Maps, it would take a little over six hours to make the trip by bicycle. I had Bee and Fournier do it in seven, and we also have to assume they didn’t leave immediately when Hoyle suggested it on Sunday. If they left some time late Monday morning (and there would have been reason to hold off, like trying to avoid paying for overnight accommodations), they would be to Kildare late on Monday afternoon/evening.
Follow this story from the beginning here.