A team of 50 GR (Grand Randonneur) will be present during the event.

Its role is to guide you, help you or assist you if needed. In fact, you ride in groups of about 10 vehicles (by type and vehicle model year, and also according to the affinities with other participants) and each group will be supervised by a vehicle "opener" and a vehicle "fermeur "with a trailer.

These are volunteers GR "run" this kind of exercise for over 20 years!