Sarah Kiptoo Cheriwoi is a Kenyan-born long-distance runner who is the winner of the 2014 Casablanca International Marathon as well as the 2013 and 2016 Grandma's Marathon, the 2017 Philadelphia Marathon and several other American road races.

Grandma's Marathon (Grandma's) is an annual road race held each June in Duluth, Minnesota, in the United States. The course runs point-to-point from the city of Two Harbors on Scenic Route 61 and continues along Lake Superior into the city of Duluth. The finish is located in Canal Park, near Grandma's Restaurant, which is next to the highly visible Aerial Lift Bridge.