The partecipation at the briefing is mandatory. Without the voucher given at the end of it, will not be possible to enter the track. Group division:  is based on the time declared by each rider. In case of dioscrepancy, after the first 2 session, the organizator will modify the group assigned. The group can be modified also if the rider itself asks for it. The riders that will  be transferred to another group will be called at the main desk for the armband change.