In the wake of the substantial fatalities and economic losses during several recent natural disasters such as the earthquakes and tsunamis of Maule 2010 in Chile and Tohuko 2011 in Japan, natural hazard mitigation research was focused on assessing the preparedness of the existing built environment and infrastructure and the efficiency of mitigation measures. Among the most important tsunami hazard mitigation measures are tsunami evacuation procedures. Tsunami evacuation time in the inundation zone in comparison to its arrival time is crucial in determining casualties during a tsunami event. Several factors affect evacuation time such as public awareness, early warning system efficiency, topographical characteristics of the inundation zone, and the efficiency of tsunami evacuation. Several research studies tackled the efficiency of evacuation process via numerical agent-based modeling. Few studies focused on the field investigation of evacuation efficiency. The current paper presents a field investigation of the efficiency of tsunami evacuation routes in the City of Viña del Mar in Chile. It also presents a field survey of public awareness of evacuation procedures and routes. Locals seemed aware of evacuation procedures and routes, however, tourists are unaware of the significant risk and the proper evacuation. Some designated evacuation routes suffer reduced efficiency due to route obstacles. Evacuation time during a physical drill was between 15-20 minutes exceeding the tsunami arrival time of 7-15 minutes estimated by Chilean researchers, which poses significant hazard during a tsunami event. The study provides information for decision makers, emergency officials and future researchers to calibrate agent-based numerical simulations.