The MYLAPS  GPS Tracking system was successfully used by a number of competitors in the Paris Marathon on the 11th of April. During this marathon around 100 competitors hired a GPS Tracker and ran the marathon with it. At the same time it was used during the Rotterdam marathon to track several safety people (like police and medics). In the coming months MYLAPS's development focus for GPS Tracking will be improving the system.

See link:http://spectator.mylaps.com/51445