Image: Giulia Sano US distance runner Sara Hall has been announced as an official ambassador for RUN X™, joining world 10,000m champion Jimmy Gressier in promoting the first World Treadmill Championship. Hall was present at the RUN X™ programme launch at Technogym Village in Cesena, Italy, earlier on Wednesday, where further details of the inaugural World Treadmill Championship were confirmed. One of the fastest US marathon runners in history, Hall has represented the United
