Race called "Extreme", due to unevenness, weather and distance in its segments, with 3,600 meters of swimming in the Tranco reservoir, 176 km of cycling with 4,000 positive meters and a 43 km trail with 1,900 meters of unevenness, which will They will lead to the finish line at the Castle of Segura de la Sierra. It can be done individually, in pairs and in relays. (see regulations)