This is the training-camp option on Ride Madrid: three days in the Pyrenees, 320 km in total and 7,400 m of climbing, ridden over mountain passes with a van following the group. Nights are in a hotel, and a mechanic is on hand so a broken gear cable or a flat does not end your camp.
Unlike the Madrid day rides, this one means travelling out of the city to the mountains. It is also the biggest effort on the site by a wide margin. Averaged over the three days, that is roughly 107 km and about 2,470 m of climbing each day, with little flat ground to recover on.
Compare it with the Madrid big climb morning, which gives you one hard climb in a half day. The camp asks you to repeat that kind of effort on consecutive days. It suits experienced riders who want volume, altitude gain and full support, and who are happy to rest, eat and sleep between stages.