The 2015 mHealth Grand Tour from Brussels to Geneva was a field trial on an international cross-border scale. More than 23 cyclists with Type 1 diabetes were among over 100 riders from 22 nations to take part in the 1,500 kilometer route incorporating more than 22,000 meters of climbing. The ten-day Tour was designed to test how innovative new mobile health solutions can help both athletes and ordinary people better manage their diabetes. This report is a summary of how riders from Team GSMA, and their health devices, performed.