This is a three-day road camp in the Pyrenees, run from Santader, and it is the only multi-day trip on the site. Over the three days you ride about 320 km and climb about 7,400 m, which is a training block of mountain passes rather than a sightseeing tour.
The logistics are handled for you. A van follows the group, you sleep in hotels, and a mechanic is on hand, so your only job each day is to ride. That makes it a good fit for experienced road cyclists who want to stack big days back to back without planning routes, carrying luggage or fixing their own bikes.
It is a different kind of ride from the single-day options. The Santader big climb morning gives you one hard effort in a half day, and the Costa Brava coast road is a long day on rolling terrain. The Pyrenees camp asks for repeated climbing on consecutive days, so recovery matters as much as fitness.