Gustavo Guillermo Moncayo Rincón, popularly known as "'El caminante por la paz" (Spanish for "the Walker for Peace"), (born on November 29, 1952 in Santiago, Putumayo) is a Colombian teacher who in 2007 walked 1,186 km from his hometown Sandoná, in the department of Nariño in the south of Colombia to the capital city Bogotá, seeking to promote an agreement for the release of his son Pablo Emilio who had been a prisoner of the guerrilla group FARC since 1997.