So, all you self-proclaimed cycling experts think you can hang with the pros? Lets see how you do when the going gets tough. Which week-long stage race do you think is the most physically demanding and why? Is it the Tour de Suisse with its brutal mountain stages? Or maybe the Critérium du Dauphiné with its altitude-testing climbs? Or perhaps you think the Vuelta a España with its scorching heat and relentless pace is the real deal? Im betting most of you will pick the one youve heard of or seen on TV, without actually knowing what it takes to ride it. So, put your money where your mouth is and defend your choice.