After his recovery he continued to climb mountains, including Aconcagua in 2005, and in 2008, Ojos del Salado in Chile and Monte Pissis in Argentina. In 2005, Ralston became the first person to climb all of the 59 ranked and/or named of Colorado's 'fourteeners' solo in winter, a project he started in 1997 and resumed after the amputation in Bluejohn Canyon.