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Continue to ChatUltra trail Chile: Dos Volcanes, dos ultras. 70k Corralco Challenge + 100k Vulcano Trail. Crónica personal Mauricio Sepúlveda. https://carrerasdemontana.com/2015/12/17/ultra-trail-chile-dos-volcanes-dos-ultras-70k-corralco-challenge-100k-vulcano-trail-cronica-personal-mauricio-sepulveda/