Jorge Díaz-Rullo (born 10 June 1999) is a Spanish rock climber who has redpointed of some of the hardest sport climbing routes in the world, including Bibliographie in Ceuse and in the Hanshelleren Cave, both at . In March 2026, he completed the first free ascent of his long-standing multi-year project in the Finestra cave in Margalef, Café Colombia, and proposed a grade of , making it only the fifth-ever rock climb in history to carry that grade.
Díaz-Rullo is also one of the few climbers in history to have free soloed an graded climbing route, which he did with his 2021 ascent of Darwin Dixit in Margalef. In 2024, he solved his first bouldering route with Muerte por Asfixia in La Pedriza in Spain. In April 2026, he flashed La Novena Puerta, making him one of the few climbers in the world to flash a consensus route. Díaz-Rullo has onsighted several routes at the grade of .
See also Seb Bouin List of grade milestones in rock climbing
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