The 218km Saturday leg starts in Belfast and goes to Antrim, Ballymena, Bushmills and the Giant's Causeway, taking in the coastline from Cushendall to Larne on to Whitehead and Carrickfergus before returning to Belfast.
The final stage of the Ireland leg, on Sunday 11 May, will see the riders embark on a 187km cross-border section from Armagh to Dublin.
The riders will then have a rest day before the Italian section of the race begins in Giovinazzo on the Adriatic coast on 13 May.
won this year by Italian Vincenzo Nibali,
will also mark the 10th anniversary of Italian rider Marco Pantani's death, with several stages dedicated to the climber who won both the Giro and the Tour de France in 1998 but died from cocaine poisoning in 2004.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.