Carlos Soria has undertaken most of his expeditions practically solo, assisted only by some sherpas and porters, in particular, Muktu Sherpa, who has accompanied him on six expeditions and four 8,000-meter ascents (K-2, Shisha Pagma, Manaslu and Lhotse). However, since July 2011, Soria has been supported by the Spanish bank BBVA, allowing him to face the last of his planned 14 'eight-thousanders' with greater guarantees and resources.