This is the most demanding circuit of our Cyclosport space. It is first the longest with 137 km on the counter. But above all it totals 3600 meters of positive elevations with the ascent of 4 large passes. You will climb the Peyresourde pass on both sides and you will discover the passes of the portillon and the Port of Bales with an incursion into Spain.The intermediate portion on the plain will take you to the neighbouring department of Haute Garonne and should be used to recover to finish this demanding course.