The Santiago Marathon (also called Gatorade Santiago Marathon for sponsorship concepts, or for its acronym MDS) is a sporting event held on the streets of the city of Santiago de Chile, where amateur and professional runners compete in the categories of 10K, 21K and 42K (marathon).
It has been held every year since 1990, replacing in 2007 the name of the competition, which was previously called the Santiago International Marathon.
Today it is considered the largest annual sporting event in Chile, obtaining in 2012 the IAAF certification and integrating it into the Bronze Label Road Races category and calendar, and with this the official recognition in the half marathon categories (21,098 meters) and marathon (42,195 meters). In South America its importance is such that it is only surpassed by the Bogota Half Marathon, in Colombia, which is recognized within the IAAF Gold Label Road Races calendar.