(Reuters) - The 100th edition of the Giro d'Italia promises to be another mountainous affair as riders will need to climb the Stelvio pass twice during a grueling 16th stage in the third week, according to the course unveiled by organizers on Tuesday. The 227-km stage, also featuring the ascent of the feared Mortirolo pass, will be held a day after the third rest day and two days before another 'tappone' (demanding stage) with five climbs scheduled for the 18th leg. More...