I was in Carrick on Shannon last wknd. Amazing view from the lake and river Shannon. I would recommend it to anyone that likes travel by bike to do it.
Was a short trip that I start on friday 2pm in Dublin and finish on Sunday at 6pm in Dublin.
Total cost of the tour = 65 euros.
Rent a bike http://www.electricbiketrails.com/
Visit Carrick on Shannon information office, there are maps and helpful information http://www.carrickonshannon.ie/carrick_on_shannon_town/index.html