Jeff Galloway, the much-loved mentor of many American runners, who became a formative figure in the running movement by his tireless promotion of the sport and its life benefits, died on Wednesday at the age of 80 from complications from a stroke and brain bleeding, Runner’s World has learned.As a runner of limited talent and limitless dedication, Galloway embodied the idealism of the amateur first running boom in the 1960s and 1970s. After becoming what he called an “unlikely Olympian,” he applied his teaching skills to his love of running, and for more than 50 years he was ingeniously inventive in finding ways to recruit, inspire, and educate runners. He was a pioneer of the run/walk method, also known as the “Galloway Method” or “Jeffing,” which instructed runners to add walking intervals into their runs.Galloway founded running stores, running groups, running camps, and running travel.…