Hello and welcome to live coverage of what could be the key stage of this year's Giro d'Italia - it's stage 19, a mammoth 184km ride from Venaria Reale to Bardonecchia that includes the Cima Coppi - the Colle delle Finestre - a second 2,000+ metre climb to Sestriere and the final steep ascent of the Jafferau. If yesterday was tough, then this takes things to a whole new level...