Wildfires pose a potential risk for infrastructure, the environment and the community, and have prompted the development of fire behavior simulators in order to understand the propagation of fire in different kinds of land cover under different meteorological conditions. The first fire simulator, DYNAFIRE, was launched in 1991, and since then there have been 22 new simulators released, amongst which FARSITE (Fire Area Simulator) [2] has been considered highly validated and praised for its outstanding precision by the scientific community [3]. There are no studies concerning fire propagation in wildfires under montane conditions for the Co-lombian Andean forest. This study seeks to validate FARSITE under such conditions, using as a case study a wildfire that hap-pened in January, 2007 in Monserrate (Bogota D.C., Colombia). The need for such validation in the context of the Cerros Orien-tales in Bogota is pressing, to assist in the mitigation and prevention of wildfires, given the increased frequency of these in the area, being the years of 2004(15 wildfires, 1558 Ha burned), 2007 (15 wildfires, 250.44 Ha burned) and 2010 (38 wildfires, 222.66 Ha burned) the most critical of the last decade. After the simulations were made, FARSITE’s fire behaviour and propagation simulator is validated for Colombian Andean Forest if and only if Spatial Variation of Wind (SVW) is incorporated in the simulation because it increases in 43% the accuracy assessment between observed and simulated fire scar with regard to Uniform Variation (UV) of wind. Finally, it is suggested to the Official Firefighters Body of Bogota (COBB) that they should register and plenally document the entire fire suppression activities undertaken in each wildfire because the abscense of this information might lead to an overestima-tion of the simulated fire scar using FARSITE.